PATENTS

 

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BOOKS       

 

Bolometers

 

QWIP 2006 - Special Issue of Infrared Physics & Technology

 

Frontiers of Thin Film Technology

 

Semiconductor Optical & Electro-Optical Devices

      

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INVITED BOOK CHAPTERS

167.         “Epitaxial Quantum Dot Infrared Dot Photodetectors”, (A.G.U. Perera and G. Ariyawansa) invited chapter for “The Wiley Encyclopedia of Electrical and Electronics Engineering”, edited by John Webster, Wiley. (In Press)

166.         Homo and Hetero Junction Interfacial Work-Function Internal Photo-Emission Detectors from UV to IR ” (A. G. U. Perera)   “Advances in Infrared Photodetectors (Semiconductors and Semimetal Series)”,(ISBN:9780123813374) Edited by C. Jagadish, S. D. Gunapala, and D.R. Rhiger, Vol 84, pp.243-302, Elsevier Limited 2011.

165.         Terahertz Detection Devices ” (A. G. U. Perera, G. Ariyawansa, and S. G. Matsik)  “Comprehensive Semiconductor Science and Technology (Nine-Volume Set)”, (ISBN-13:978-0-444-53143-8, ISBN-10: 0-444-53143-2) Edited by Pallab Bhattacharya, Volume 6, pp. 265–307, Elsevier Limited 2011.

164.         Quantum Dot Structures for Multi-Band Infrared and Terahertz Radiation Detection” (G. Ariyawansa and A. G. U. Perera)  “Handbook of Self Assembled Semiconductor Nanostructures Novel Devices in Photonics and Electronics”, Edited by M. Henini, Elsevier Limited 2007.

163.         "Quantum Structures For Far-Infrared Detection" (A. G. U. Perera and S.G. Matsik)  "Intersubband Infrared Photodetectors", (ISBN 981-238-308-5) edited by V.Ryzhii,  229-280, Academic press 2002.

162.         "Silicon and GaAs as Far-infrared Detector Material" (A. G. U. Perera)  “Photodetectors and Fiber Optics”, (ISBN 0-12-513908-x) edited by H. S. Nalwa, 204-234, Academic Press 2001.

161.         “Semiconductor Photoemissive Structures For Far Infrared Detection” (A. G. U. Perera) “Handbook of Thin Film Devices", (ISBN 0-12-550760-7)  co-editors, A. G. U. Perera and H. C. Liu , Maurice H. Francombe, Vol 2,  135-167, San Deigo,  Academic press  2000.

160.        "Quantum Well Devices For Infrared Emission" (A. G. U. Perera, J. -W. Choe and M. H. Francombe)  "Physics of Thin films", editors, J. Vossen and M. H. Francombe, Volume 23, 217-298, San Diego, Academic press 1998.

159.         "Physics and Novel Device Applications in Semiconductor Homojunctions", (A. G. U. Perera)  "Physics of Thin Films", editors, J. Vossen and M. H. Francombe, Volume 21, 1-75, San Diego, Academic press 1995.      

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JOURNAL ARTICLES

158."Tunable hot-carrier photodetection beyond the bandgap spectral limit" Y. F. Lao, A. G. Unil Perera, L. H. Li, S. P. Khanna, E. H. Linfield, and H. C. Liu, Nature Photonics (2014) doi:10.1038/nphoton.2014.80

 



157."Optical study of HgCdTe infrared photodetectors using internal photoemission spectroscopy" Y. F. Lao, A. G. U. Perera and Priyalal S. Wijewarnasuriya, Appl. Phys. Lett. 104, 131106 (2014) (Full paper in PDF format)

 



156."Wavelength-extended photovoltaic infrared photodetectors" Y. F. Lao, P. K. D. D. P. Pitigala, and A. G. U. Perera, L. H. Li, S. P. Khanna, and E. H. Linfield, Appl. Phys. Lett. 104, 131101 (2014) (Full paper in PDF format)

 



155."Performance improvements of split-off band infra-red detector by Graded Barriers" P. K. D. D. P. Pitigala, Y.F. Lao, A. G. U. Perera, L. Li, E. H. Linfield, H. C. Liu, J. Appl. Phys. 115, 063105 (2014). (Full paper in PDF format)

 



154."Effects of Incident-Light-Intensity-Dependent Band Gap Narrowing on Barrier Heights of p-Doped AlxGa1-xAs/GaAs Heterojunction Devices " P. K. D. D. P. Pitigala, Y. F. Lao, A. G. U. Perera, Infrared Phys. & Tech., 63, 193-197 (2014). (Full paper in PDF format)

 



153."InAs/GaAs p-type quantum dot infrared photodetector with higher efficiency" Yan-Feng Lao, Seyoum Wolde, A. G. Unil Perera, Y. H. Zhang, T. M. Wang, H. C. Liu, J. O. Kim, Ted Schuler-Sandy, Zhao-Bing Tian and S. S. Krishna, Appl. Phys. Lett. 103, 241115 (2013). (Full paper in PDF format)

 



152."Direct observation of spin-orbit splitting and phonon-assisted optical transitions in the valence band by internal photoemission spectroscopy" Yan-Feng Lao, A. G. Unil Perera, L. H. Li, S. P. Khanna, E. H. Linfield, H. C. Liu, Physical Review B 88, 201302(R) (2013). (Full paper in PDF format)

 



151."Band offsets and carrier dynamics of type-II InAs/GaSb superlattice photodetectors studied by internal photoemission spectroscopy" Yan-Feng Lao, P. K. D. D. P. Pitigala, A. G. Unil Perera, E. Plis, S. S. Krishna et al, Appl. Phys. Lett. 103, 181110 (2013). (Full paper in PDF format)

 



150."Temperature-dependent far-infrared response of epitaxial multilayer graphene" Yan-Feng Lao, A. G. Unil Perera, Kristin Shepperd, Feng Wang, Edward H. Conrad et al., Appl. Phys. Lett. 102, 231906 (2013). (Full paper in PDF format)

 



149."Optical phonon modes in InGaN/GaN dot-in-a-wire heterostructures grown by molecular beam epitaxy" J. Titus, H. P. T. Nguyen, Z. Mi, and A. G. U. Perera, Appl. Phys. Lett. 102, 121901 (2013). (Full paper in PDF format)

 



148."Exciton Transport and Electron Mobility of Organized Aggregates of Cationic Dye Thiocyanates" K.Tennakone, P.K.D.D.P Pitigala, and A. G. U. Perera, RCS Advance 3 2770 (2013). (Full paper in PDF format)

 



147."A multicolor, broadband (5-20?m), quaternary-capped InAs/GaAs quantum dot infrared photodetector" Sourav Adhikary, Yigit Aytac, Srujan Meesala, Seyoum Wolde, A. G. Unil Perera, and Subhananda Chakrabarti, Appl. Phys. Lett. 101, 261114 (2012). (Full paper in PDF format)

 



146."Temperature-Dependent Internal-Photoemission Probe for Band Parameters" Y. F. Lao, and A. G. U. Perera, Phys. Rev. B. 86, 195315 (2012). (Full paper in PDF format)

 



145."Plasma frequency and dielectric function dependence on doping and temperature for p-type Indium Phosphide epitaxial films" R. C. Jayasinghe, Y. F. Lao, M. Hammar, C. F. Cao, H. Wu, and A. G. U. Perera, J. of Physics: Condensed Matter. (24), 435803 (2012) (Full paper in PDF format)

 



144."Optical properties of nanostructured TiO2 thin films and their application as antireflection coatings on infrared detectors" R. C. Jayasinghe, A. G. U. Perera, H. Zhu, and Y. Zhao, Optics Letters (37), 4302 (2012) (Full paper in PDF format)

 



143."The effect of reactor pressure on the electrical and structural properties of InN epilayers grown by HPCVD" M. K. I. Senevirathna, S. Gamage, R. Atalay, A. R. Acharya, A. G. U. Perera, N. Dietz, M. Buegler, A. Hoffmann, L. Su, A. Melton, I. Ferguson, J. Vac. Sci. Technol. A 30, 031511 (2012) (Full paper in PDF format)

 



142."Photovoltaic Infrared Detection with p-type Graded Barrier Heterostructures"P.K.D.D.P. Pitigala, S. G. Matsik, A. G. U. Perera , S. P. Khanna, L. H. Li, E. H. Linfield, Z. R. Wasilewski, M. Buchanan, and H. C Liu , Journal of Applied. Physics 111, 084505 (2012) (Full paper in PDF format)

 



141." High-performance, long-wave (~10.2µm) InGaAs/GaAs quantum dot infrared photodetector with quaternary In0.21Al0.21Ga0.58As capping"Subhananda Chakrabarti, Sourav Adhikary, Nilanjan Halder, Yigit Aytac, and A. G. U. Perera, Applied Physics Letter. 99, 181102 (2011) (Full paper in PDF format)

 



140." Design of resonant-cavity-enhanced multi-band photodetectors",Y. Lao, G. Ariyawansa, and A. G. U. Perera, Journal of Applied. Physics 110, 043112 (2011) (Full paper in PDF format)

 



139." Dielectric function model for p-type semiconductor inter-valence band transitions ", Yan-Feng Lao and A. G. Unil Perera, Journal of Applied Physics 109, 103528 (2011) (Full paper in PDF format)

 



138." Effects of Graded Barriers on the Operation of Split-Off Band Infrared Detectors ", A. G. U. Perera, S. G. Matsik, D.P. Pitigala, Y.F Lao, S. Khanna, L.H.Li, E.Linfield, Z.R.Wasilewski, M.Buchanan, X.H.Wu, and H.C.Liu., Infrared Phys. Technol. 54 296-301 (2011).(Full paper in PDF format)

 



137." Highly sensitive GaAs/AlGaAs heterojunction bolometer ", P.K.D.D.P. Pitigala, P.V.V.Jayaweera, S.G.Matsik, A.G.U.Perera and H.C.Liu, Sensors and Actuators A 167 245-248 (2011) (Full paper in PDF format)

 



136." Heterojunction plasmonic midinfrared detectors ", M. S. Shishodia and A. G. Unil Perera, Journal of Applied Physics 109, 043108 (2011).(Full paper in PDF format)

 



135." Surface plasmon enhanced IR absorpotion: Design and experiment ", M.S. Shishodia, P.V.V. Jayaweera, S.G. Matsik, A.G.U. Perera, H.C. Liu, M. Buchanan, Photonics and Nanostructures- Fundamentals and Applications 9, 95-100 (2011).(Full paper in PDF format)

 



134." Five Band Bias-Selectable Integrated Quantum Well Detector in an n-p-n Architecture ", G. Ariyawansa, Y. Aytac, A. G. U. Perera, S. G. Matsik, M. Buchanan, Z. R. Wasilewski, and H. C. Liu, Appl. Phys. Lett.97, 231102 (2010).(Full paper in PDF format)

 



133." Light-hole and heavy-hole transitions for high-temperature long-wavelength infrared detection ", Y.F. Lao, P.K.D.D.P. Pitigala, A.G.U. Perera, H.C. Liu, M.Buchanan, Z.R. Wasilewski, K.K. Choi,and P. Wijewarnasuriya. Appl. Phys. Lett.97, 091104 (2010).(Full paper in PDF format)

 


132."Low-Cost ZnO-Based Ultraviolet–Infrared Dual-Band Detector Sensitized With PbS Quantum Dots", P.V.V. Jayaweera, P.K.D.D.P. Pitigala, J.F. Shao, K. Tennakone, A.G.U. Perera, P.M. Jayaweera, J. Baltrusaitis. IEEE Transactions on Electron Devices 57 (10) 2756-2760 (2010).(Full paper in PDF format)

 

 

131." High-performance quantum ring detector for the 1.3 terahertz range ", S. Bhowmick, G. Huang, W. Guo, C. S. Lee, P. Bhattacharya, G. Ariyawansa, and A. G. U. Perera Appl. Phys. Lett.96, 231103 (2010).(Full paper in PDF format)

 

 

130." Low-Cost UV-IR Dual Band Detector Using Nonporous ZnO Film Sensitized by PbS Quantum Dots ", (SHAO Jia-Feng, A. G. U. Perera, P. V. V. Jayaweera, and HE De-Yan), Chin. Phys. Lett.27, 027302 (2010).(Full paper in PDF format)

 

 

129." Analysis of Dark Current Mechanisms for Split-Off Band Infrared Detectors at High Temperatures ", (Y. F. Lao, P. V. V. Jayaweera, Steven G. Matsik, A. G. Unil Perera, H. C. Liu, M. Buchanan, and Z. R. Wasilewski), IEEE Transactions on Electron Devices 57, 1230 (2010). (Full paper in PDF format)

 

 

128.“ Polarization Sensitivity of Quantum Well Infrared Photodetector Coupled to a Metallic Diffraction Grid”, (V. Apalkov, G. Ariyawansa, A. G. U. Perera, M. Buchanan, Z. R. Wasilewski, and H. C. Liu), IEEE J. Quantum Electron 46, 877-883 (2010).(Full paper in PDF format)

 

 

127.“ Quantum dot nanostructures for multi-band infrared detection”, (A. G. U. Perera, G. Ariyawansa, G. Huang, P. Bhattacharya), Infrared Physics & Technology 52, 252-256 (2009). (Full paper in PDF format)

 

 

126.“ Operating temperature and the responsivity of split-off band detectors”, (A. G. U. Perera, P. V. V. Jayaweera, S. G. Matsik, H. C. Liu, M. Buchanan, Z. R. Wasilewski), Infrared Physics & Technology 52, 241-246 (2009). (Full paper in PDF format)

 

 

125.“ Device modeling for split-off band detectors”,(S. G. Matsik, P. V. V. Jayaweera, A. G. U. Perera, K. K. Choi, and P. Wijewarnasuriya) , Journal of Applied Physics 106, 1064503 (2009). (Full paper in PDF format)

 

 

124.“ Effect of emitter thickness on the spectral shape of heterojunction interfacial workfunction internal photoemission detectors”, (S. G. Matsik, R. C. Jayasinghe, A. B. Weerasekara, A. G. U. Perera, E. H. Linfield, S. P. Khanna, M. Lachab, and H.C. Liu), Journal of Applied Physics 106, 014509 (2009). (Full paper in PDF format)

 

 

123.“Normal incidence detection of ultraviolet, visible, and mid-infrared radiation in a single GaAs/AlGaAs device”, (G. Ariyawansa, P. V. V. Jayaweera, A. G. U. Perera, S. G. Matsik, M. Buchanan, Z. R. Wasilewski, and H. C. Liu), Optics Letters 34, 2036 (2009). (Full paper in PDF format)

 

 

122. “Wavelength agile superlattice quantum dot infrared photodetector”, (G. Ariyawansa, A. G. U. Perera, G. Huang, and P. Bhattacharya), Appl. Phys. Lett. 94, 131109 (2009). (Full paper in PDF format)

 

 

121. “A quantum ring terahertz detector with resonant tunnel barriers”, (G. Huang, W. Guo, P. Bhattacharya, G. Ariyawansa, and A. G. U. Perera), Appl. Phys. Lett. 94, 101115 (2009). (Full paper in PDF format)

 

 

120.   “Room Temperature Nano and Micro Structure Photon Detectors”, (A.G.U. Perera,  P.V.V. Jayaweera, G. Ariyawansa, S.G. Matsik, K. Tennakone, M. Buchanan, H.C. Liu, X.H. Su and P. Bhattacharya), Microelectronics Journal, Volume 40, Issue 3, pp. 507-511 (2009). (Full paper in PDF format)

 

 

119.    "Capacitance hysteresis in GaN/AlGaN heterostructures", (L. E. Byrum, G. Ariyawansa, R. C. Jayasinghe, N. Dietz, A. G. U. Perera, S. G. Matsik, I. T. Ferguson, A. Bezinger, and H. C. Liu), Journal of Applied Physics, Vol.105, Issue 2, pp. 023709-1 to 023709-4 (2009). (Full paper in PDF format)

 

 

118.   "Simultaneous detection of ultraviolet and infrared radiation in a single GaN/GaAlN heterojunction", (Ranga C. Jayasinghe, Gamini Ariyawansa, Nikolaus Dietz, A. G. Unil Perera, Steven G. Matsik, Hongbo B. Yu, Ian T. Ferguson, Andrew Bezinger, Sylvain R. Laframboise, Margaret Buchanan, and Hui Chun Liu), Optics Letters Vol. 33, Iss. 21, pp. 2422–2424 (2008). (Full paper in PDF format)

 

 

117.    "Dopant Migration-Induced Interface Dipole Effect in n-Doped GaAs/AlGaAs Terahertz Detectors", (Jit, S.; Weerasekara, A. B.; Jayasinghe, R. C.; Matsik, S. G.; Perera, A. G. U.; Buchanan, M.; Sproule, G. I.; Liu, H. C.; Stintz, A.; Krishna, S.; Khanna, S. P.; Lachab, M.; Linfield, E. H.), Electron Device Letters, IEEE, Volume 29, Issue 10, pp. 1090–1093 (2008). (Full paper in PDF format)

 

116.    "Self-consistent performance modeling for dualband detectors", (S.G. Matsik, A.G.U. Perera), J. Appl. Phys. 104, 044502 (2008).(Full paper in PDF format)

 

 

115.    “Uncooled infrared detectors for 3-5 µm and beyond”, (P.V.V. Jayaweera, S. G. Matsik, A. G. U. Perera,  H. C. Liu, M. Buchanan and Z. R. Wasilewski), Appl. Phys. Lett. 93, 021105 (2008). (Full paper in PDF format)

 

114.     “Bias-selectable tri-color tunneling quantum dot infrared photodetector for atmospheric windows”, (G. Ariyawansa, V. Apalkov, A. G. U. Perera, S. G. Matsik, G. Huang, and P. Bhattacharya), Appl. Phys. Lett.92, 111104 (2008). (Full paper in PDF format)

 

113.    Optical properties of n-doped Ga1−xMnxN epitaxial layers grown by metal-organic chemical-vapor in mid and far "5-50 _m… IR range”, (A. B. Weerasekara, Z. G. Hu, N. Dietz,  A. G. U. Perera, A. Asghar,  M. H. Kane, M. Strassburg and I. T. Ferguson), J. Vac. Sci. Technol. B 26(1) 52-55 Jan/Feb (2008). (Full paper in PDF format)  

 

112.    Sensitization of TiO2 and ZnO nanocrystalline films with acriflavine”, (M.K.I. Senevirathne, P.K.D.D.P. Pitigala, V. Sivakumar,    P.V.V. Jayaweera, A.G.U. Perera and K. Tennakone), Journal of Photochemistry and Photobiology A: Chemistry, 195, 364-367,(2008). (Full paper in PDF format

 

111.    A Multi-Color Quantum Dot Intersublevel Detector with Photoresponse in the Terahertz Range, (G. Huang, J. Yang and P. Bhattacharya, G. Ariyawansa and A. G. U. Perera), Appl. Phys. Lett. 92, 011117, (2008). (Full paper in PDF format)

110.    "Semiconductor Terahertz Detectors and Absorption Enhancement Using Plasmons", (A. G. U. Perera, G. Ariyawansa, P. V. V. Jayaweera, S. G. Matsik, M. Buchanan and H. C. Liu), Microelectronics Journal, MEJ2237, 39, 601-606, (2008). (Full paper in PDF format)

109.     "Why Gratzels cell works so well" (P.V.V. Jayaweera, A.G.U. Perera and K. Tennakone) Inorganica Chimica Acta, 361(3), 707-711, February (2008),  (Full paper in PDF format)  

108.    High-Temperature Tunneling Quantum-Dot Intersublevel Detectors for Mid-Infrared to Terahertz Frequencies” (P. Bhattacharya, Xiaohua Su, G. Ariyawansa, A. G. U. Perera), Proceedings of the IEEE 95, 1828– 1837 (2007). (Full paper in PDF format)

107.    "Displacement currents in semiconductor quantum dots embedded dielectric media: A method for room temperature photon detection", (P. V. V. Jayaweera, A. G. U. Perera, and K. Tennakone) Applied Physics Letters 91, 063114-3, (2007).(Full paper in PDF format)

106.    "Dual-band pixelless upconversion imaging devices", (L. K. Wu, H. L. Hao, W. Z. Shen, G. Aeiyawansa, A. G. U. Perera, and S. G. Matsik), Optics Letters, 32 2366-2368, (2007) (Full paper in PDF format)

105.    "Carrier concentration and surface electron accumulation in indium nitride layers grown by high pressure chemical vapor deposition." (R. P. Bhatta, B. D. Thomas, A. Weerasekera, A. G. U. Perera, M. Alevli, and N. Dietz) J. Vac. Sci. Technol. A 25(4) 967-970 July (2007) (Full paper in PDF format)

104.    "Wavelength and Polarization Selective Multi-Band Tunneling Quantum Dot Detectors", (A. G. U. Perera, G. Ariyawansa, V. M. Apalkov, S. G. Matsik, X. H. Su, S. Chakrabarti, and P. Bhattacharya), Opto-Electron. Rev., 15(4), 223–228 (2007).(Full paper in PDF format)

103.    Infrared optical anisotropy of diluted magnetic Ga1-x MnxN/c –sapphire epilayers with a GaN buffer layer by metaloorganic chemical vapor deposition.” (Z. G. Hu,  A. B. Weerasekara,  N. Dietz  A. G. U. Perera,  M. Strassburg,  M. H. Kane, A. Asghar and I. T. Ferguson) PRB. 75, 205320 (2007)  (Full paper in PDF format)  

102.      "n-type GaAs/AlGaAs Heterostructure detector with a 3.2 THz threshold frequency (A. B. Weerasekara, M. B. M. Rinzan, S. G. Matsik, A. G. U. Perera, M. Buchanan, H. C. Liu, G. von Winckel, A. Stintz, and S. Krishna) Optics Letters, 32 (10), 1335-1337, (2007) (Full paper in PDF format).

101.             GaSb homojunctions for Far-IR (THz) Detection(P. V. V. Jayaweera, S. G. Matsik, and A. G. U. Perera, Y. Paltiel, Ariel Sher and Arie Raizman, H. Luo, and H. C. Liu), Applied Physics Letters, 90, 111109, (2007) (Full paper in PDF format)

100.      Effects of a p–n junction on heterojunction far infrared detectorsS.G. Matsik, M.B.M. Rinzan, A.G.U. Perera, H.H. Tan, C. Jagadish and H.C. LiuInfrared Physics & Technology, 50, 274-278 (2007) (Full paper in PDF format)

99.        Quantum mechanical effects in internal photoemission THz detectors (M.B. Rinzan, S. Matsik and A.G.U. Perera) Infrared Physics & Technology, 50,199-205 (2007) (Full paper in PDF format)

98.         Performance improvements of ultraviolet/infrared dual-band detectors” (A.G.U. Perera, G. Ariyawansa, M.B.M. Rinzan, M. Stevens, M. Alevli, N. Dietz, S.G. Matsik, A. Asghar, I.T. Ferguson, H. Luo et al.) Infrared Physics & Technology, 50, 142-148 (2007) (Full paper in PDF format)

97.        Multi-color tunneling quantum dot infrared photodetectors operating at room temperature (G. Ariyawansa, A.G.U. Perera, X.H. Su, S. Chakrabarti and P. Bhattacharya) Infrared Physics & Technology, 50,156-161 (2007) (Full paper in PDF format)

96.        1/f Noise in dye-sensitized solar cells and NIR photon detectors” (P.V.V. Jayaweera, P.K.D.D.P. Pitigala, M.K.I. Seneviratne, A.G.U. Perera and K. Tennakone) Infrared Physics & Technology, 50, 270-273 (2007) (Full paper in PDF format)

95.         Si doped GaAs/AlGaAs terahertz detector and phonon effect on the responsivity” (A.B. Weerasekara, M.B.M. Rinzan, S.G. Matsik, A.G.U. Perera, M. Buchanan, H.C. Liu, G. von Winckel, A. Stintz and S. Krishna) Infrared Physics & Technology, 50,194-198 (2007) (Full paper in PDF format)

94.         "Spin split-off transition based IR detectors operating at high temperatures"  (P.V.V.   Jayaweera, S.G. Matsik, K. Tennakone, A.G.U. Perera, H.C. Liu and S. Krishna ) Infrared Physics & Technology, 50, 279-283 (2007) (Full paper in PDF format)

93.         "Optical Studies of MOCVD grown GaN based ferromagnetic semiconductorepilayers and devices"(M. H. Kane, M. Strassburg, W. E. Fenwick, A. Asghar, J. Senawiratne, D. Azamat, Z. Hu, E. Malguth, S. Graham, U. Perera, W. Gehlhoff, A. Hoffmann, N. Dietz, C. J. Summers, I. T. Ferguson) Physica Status solidi, 3 (6), 2237-2240 ( 2006) (Full paper in PDF format)

92.         "Quantum structures for multiband photon detection" (A.G.U. Perera) Opto-Electronics Review, 14 (2), 103-112, (2006) (Full paper in PDF format)

91.          “High Operating Temperature Split-off Band Infrared Detectors (A. G. U. Perera, S. G. Matsik, P. V. V. Jayaweera, K. Tennakone, H. C. Liu, M. Buchanan G. Von Winckel, A. Stintz, and S. Krishna) Appl.Phys.Lett., 89, 131118, (2006) (Full paper in PDF format)

90.         “The Characterization of InN layers grown by high-pressure chemical vapor deposition (M. Alevli, G. Durkaya, W. Fenwick, A. Weerasekara, V. Woods, I. Ferguson, U. Perera and N. Dietz)  Appl.Phys.Lett., Lett. 89, 112119, (2006) (Full paper in PDF format

89.         GaN/AlGaN heterojunction infrared detector responding in 8-14 µm and 20-70 µm ranges” (G. Ariyawansa, M. B. M. Rinzan, M. Strassburg, N. Dietz , A. G. U. Perera, S. G. Matsik, A. Asghar, I. T. Ferguson, H. Luo, and H. C. Liu)  Appl.Phys.Lett., 89, 141122 (2006) (Full paper in PDF format)

88.         “GaN/AlGaN ultraviolet/infrared dual-band detector” (G. Ariyawansa, M. B. M. Rinzan, M. Alevli, M. Strassburg, N. Dietz , A. G. U. Perera, S. G. Matsik, A. Asghar, I. T. Ferguson, H. Luo, A. Bezinger, and H. C. Liu)  Appl.Phys.Lett., 89, 091113, (2006) (Full paper in PDF format)

87.        “Characteristics of a Si dual-band detector responding in both near- and far-infrared regions (G. Ariyawansa, M. B. M. Rinzan, S. G. Matsik, A. G. U. Perera, G. Hastings, H. C. Liu, M. Buchanan, G. I. Sproule, V. I. Gavrilenko, and V. P. Kuznetsov)  Appl.Phys.Lett., 89, 061112, (2006) (Full paper in PDF format)

86.        Terahertz detection with tunneling quantum dot intersublevel photodetector" (X.H. Su, J. Yang, P. Bhattacharya, G. Ariyawansa, and A.G. U. Perera) Appl.Phys.Lett., 89, 031117 (2006) (Full paper in PDF format)

85.        “Longitudinal–optical phonon hole plasmon coupled modes in heavily doped p-type GaSb:Zn epitaxial  films” (Z. G. Hu, M. B. M. Rinzan, A. G. U. Perera, M. Zhu, Y. Paltiel, A. Raizman, and A. Sher)  Eur. Phys. J. B., 50, 403-410, (2006) (Full paper in PDF format)

84.        "Grouping behavior of inter-pulse time intervals for triggered pulses in an AlGaAs/InGaAs multilayer structure"
(A. B. Weerasekara, S. G. Matsik, G. S. Cymbalyuk and A. G. U. Perera) Physica D, 215, 159-165, (2006). (Full paper in PDF format)

83.        "Lattice vibrations in hexagonal Ga1–xMnxN epitaxial films on c-plane sapphire substrates by infrared reflectance spectra"
(Z. G. Hu, M. Strassburg, A. Weerasekara, N. Dietz, A. G. U. Perera, M. H. Kane, A. Asghar, and I. T. Ferguson)  Appl. Phys. Lett., 88, 061914, (2006) (Full paper in PDF format)

82.        “Composition dependence of the infrared dielectric function in Si- doped hexagonal AlxGa1-xN films on c-plane sapphire substrates (Z. G. Hu, M.Strassburg, N. Dietz. A.G. U. Perera, A. Asghar, I.T. Ferguson) Phys. Rev. B., 72, 245326, (2005) (Full paper in PDF format)

81.        “Terahertz absorption in AlGaAs films and detection using heterojunctions (M. B. M. Rinzan,  A. G. U. Perera, S. G. Matsik, H. C. Liu, M. Buchanan, G. Von Winckel, A. Stintz, and S. Krishna) Infrared Physics & Technology., 47, 188–194, (2005) (Full paper in PDF format) 

80.        “1/f noise and dye-sensitized solar cells (P. V. V. Jayaweera, P. K. D. D. P. Pitigala, A. G. U. Perera and K. Tennakone) Semicond. Sci. Technol. 20, L40–L42, (2005) (Full paper in PDF format)

79.        “High Performance mid-infrared quantum dot infrared photodetectors (S. Chakrabarti, A D Stiff-Roberts, X Su, P Bhattacharya, G Ariyawansa, and A. G. U. Perera) J. Phys D. Appl. Phys. 38, 2135-2141, (2005) (Full paper in PDF format)

78.        “A Resonant Tunneling Quantum-Dot Infrared Photodetector (Xiaohua Su, Subhananda Chakrabarti, Pallab Bhattacharya, Gamini Ariyawansa, and A. G. U. Perera), IEEE Journal of Quantum Electronics,  41(7), 974-979, (2005) (Full paper in PDF format)

77.        “Zn-Doped GaSb Epitaxial Film Absorption Coefficients at Terahertz Frequencies and Detector Applications (Z. G. Hu, A. G. U. Perera, Y. Paltiel, A. Raizman, & A. Sher), Journal of Applied Physics, 98, 023511, (2005) (Full paper in PDF format)

76.        “Characteristics of a Tunneling Quantum-dot Infrared Photodetector Operating at Room Temperature (P. Bhattacharya, X. H. Su,  S. Chakrabarti,  G. Ariyawansa,  and  A. G. U. Perera), Appl. Phys. Lett, 86, 191106, (2005) (Full paper in PDF format)

75.        “Optical Characterizations of Heavily Doped p-type AlxGa1-xAs and GaAs Epitaxial Films at Terahertz Frequencies (Z. G. Hu, M. B. M. Rinzan, S. G. Matsik, A. G. U. Perera, G. Von Winckel, A. Stintz, and S. Krishna), Journal of Applied Physics, 97, 093529, (2005) (Full paper in PDF format)

74.        "Near- and Far-Infrared p-GaAs Dual Band Detector(G. Ariyawansa, M.B.M. Rinzan, D. G. Esaev, S. G. Matsik, G. Hastings, A. G. U. Perera, H. C. Liu, B. N. Zvonkov, and V. I. Gavrilenko), Appl. Phys. Lett, 86, 143510, (2005) (Full paper in PDF format)

73.        "AlGaAs emitter/GaAs barrier Terahertz detector with a 2.3 THz threshold,” (M.B.M. Rinzan, A. G. U. Perera, S. G. Matsik, H. C. Liu, Z. Wasilewski and M. Buchanan)  Appl. Phys. Lett, 86, 071112, (2005) (Full paper in PDF format)

72.        "Effect of Well Width on Three Color Quantum Dot-in-a-Well Infrared Detectors” (G. Ariyawansa, A. G. U. Perera, Senior Member, IEEE, G. S. Raghavan, G. von Winckel, A. Stintz, and Sanjay Krishna), IEEE Photonics Tech. Letts, 17, 1064-1066, (2005)   (Full paper in PDF format)

71.        "Effect of Doped Substrate on GaAs/AlGaAs Interfacial Workfunction IR Detector Response through Cavity Effect" (S. G. Matsik, M. B. M. Rinzan, D. G. Esaev, A. G. U. Perera, G. Von Winckel, A. Stintz, and S. Krishna) IEEE Transactions on Electron Devices, 52 (3), 413-418, (2005) (Full paper in PDF format)

70.        "Characteristics of a Multicolor InGaAS--GaAs Quantum-Dot Infrared Photodetector" (S. Chakrabarti, Member, IEEE, X. H. Su, P. Bhattacharya, Fellow, IEEE, G. Ariyawansa, and A.G.U. Perera) IEEE Photonics Technology Letters , 17 (1), 178-180, (2005)  (Full paper in PDF format)

69.        "Dye-sensitized Near-infrared Room-temperature Photovoltaic Photon Detectors" (P.V.V. Jayaweera, A.G.U. Perera, M.K.I. Senevirathna, P.K.D.D.P. Pitigala, and K. Tennakone) Applied Physics Letter, 85 (23), 5754-5756, (2004) (Full paper in PDF format)

68.        "Free Carrier Absorption in Be-doped Epitaxial AlGaAs Thin Films" (M. B. M. Rinzan, D. G. Esaev, A. G. U. Perera, S. G. Matsik, G. Von Winckel, A. Stintz, and S. Krishna) Applied Physics Letter, 85 (22),  5236-5238, (2004) (Full paper in PDF format)

67.        "Design and Optimization of GaAs/AlGaAs Heterojunction Infrared Detectors.(D. G. Esaev, M. B. M. Rinzan, S. G. Matsik, and A. G. U. Perera) Journal of Applied Physics, 96 (8), 4588-4597, (2004) (Full paper in PDF format)

66.        "Construction of a Photovoltaic Device by Deposition of Thin Films of the Conducting Polymer Polythiocyanogen", (V.P.S. Perera,  P.V.V.  Jayaweera,  P.K.D.D.P.  Pitigala,  P.K.M. Bandaranayake,  G. Hastings,  A. G. U. Perera,  K. Tennakone) Synthetic Metals, 143, 283-287, (2004) (Full paper in PDF format)

65.        "High Performance Single Emitter Homojunction Interfacial Workfunction Far Infrared Detectors", (D. G. Esaev, M. B. M.  Rinzan, S. G. Matsik, A. G. U. Perera, H. C. Liu, B. N. Zvonkov , V. I. Gavrilenko and A. A. Belyanin) Journal of Applied Physics, 95 (2), 512-519, (2004) (Full paper in PDF format)

64.        "20  Micron Cutoff Heterojunction Interfacial Work Function Internal Photoemission Detectors", ( S. G. Matsik, M. B. M. Rinzan, D. G. Esaev, A. G. U. Perera, H. C. Liu and M. Buchanan) Applied Physics letters, 84 (18), 3435-3437, (2004) (Full paper in PDF format)

63.        "The Effects of Light–Heavy Hole Transitions on the Cutoff Wavelengths of Far Infrared Detectors", (A. G. U. Perera, S. G. Matsik, M. B. M. Rinzan, A. Weerasekara, M. Alevli, H. C. Liu, M. Buchanan, B. Zvonkov and V. Gavrilenko) Infrared Physics & Technology, 44 (5-6), 347-353, (2003) (Full paper in PDF format)

62.        "Three-color (λ1~3.8  µm, λ1~8.5  µm, and λ1~23.2  µm) InAs/InGaAs quantum-dots-in-a-well detecto", (G. Ariyawansa, S. G. Matsik, A. G. U. Perera, S. Krishna, S. Raghavan, G. von Winckel, and A. Stintz) Applied Physics Letters, 83 (14), 2745-2747, (2003) (Full paper in PDF format)

61.        "Resonant cavity enhancement in heterojunction GaAs/AlGaAs terahertz detectors", (D. G. Esaev, S. G. Matsik, M. B. M. Rinzan, A. G. U. Perera and H. C. Liu)  Journal of Applied Physics, 93 (4),  1879 ~ 1883,  (2003) (Full paper in PDF format)

60.        "Cutoff tailorability of heterojunction terahertz detectors", ( S. G. Matsik, M. B. M. Rinzan, A. G. U. Perera, H. C. Liu, Z. R. Wasilewski, and M. Buchanan) Appl. Phys. Lett. 82 (1), 139-141,  (2003) (Full paper in PDF format)

59.        Transient Photocurrent Overshoot in Quantum-well Infrared Photodetectors”, (V. Letov, M. Ershov, S.G. Matishik, and A. G. U. Perera) Appl. Phys. Lett. 79 (13), 2094-2096, (2001) (Full paper in PDF format)

58.        "Spontaneous Oscillations and Triggered Pulsing in GaAs/InGaAs Multiquantum Well Structures ", (A. G. U. Perera, S. G. Matsik, V. Y. Letov, H. C. Liu, M. Gao, M. Buchanan, W. J. Schaff) Solid-state Electronics, 45 (7), 1121-1125, (2001) (Full paper in PDF format) 

57.         "35 µm Cutoff Bound-toquasibound and Bound-to-continuum InGaAs QWIPs ", (A. G. U. Perera, S. G. Matsik, H. C. Liu, M. Gao, M. Buchanan, W. J. Schaff, and W. Yeo) Infrared Physics & Technology, 42, 157-162, (2001) (Full paper in PDF format)

56.        "Space Charge Spectroscopy of Intergrated Quantum Well Infrared Photodetector--Light Emitting Diode ", (M. Ershov, B. Yaldiz, A. G. U. Perera, S. G. Matsik, H. C. Liu, M. Buchanan, Z. R. Wasilewski, and M. D. Willams), Infrared Physics & Technology, 42, 259-265, (2001) (Full paper in PDF format) 

55.        “Experimental Observation of Transitent Photocurrent Overshoot in Quantum Well Infrared Photodetectors ", (V. Letov, A. G. U. Perera, M. Ershov, H. C. Liu, M. Buchanan, and Z. R. Wasilewski), Infrared Physics & Technology, 42, 243-247, (2001) (Full paper in PDF format)  

54.        "Chaotic Dynamics in Terahertz-driven Semiconductors with Negative Effective Mass ", (J. C. Cao, H. C. Liu, X. L. Lei, A. G. U. Perera) Physical Review B., 63, 115308, (2001) (Full paper in PDF format)

53.        "Heterojunction Wavelength-Tailorable Far-Infrared Photodetectors with Response out to 70 Microns", ( A. G. U. Perera, S. G. Matsik, B. Yaldiz, H. C. Liu, A. Shen, M. Gao, Z. R. Wasilewski and M. Buchanan), Appl. Phys. Lett., 78, 2241~2243, (2001) (Full paper in PDF format)

52.        "Low Dark Current Far Infrared Detector with an Optical Cavity Architecture", (A. L. Korotkov, A. G. U. Perera, W. Z. Shen, H. C. Liu, M. Buchanan), Solid-State Electronics, 45, 87-93, (2001) (Full paper in PDF format)

51.         "Free-carrier Absorption in Be- and C-doped GaAs Epilayers and Far Infrared Detector Applications", (A. L. Korotkov, A. G. U. Perera, W. Z. Shen, J. Herfort, K. H. Ploog, W. J. Schaff and H. C. Liu), Journal of Applied Physics, 89 (6), 3295~3300, (2001) (Full paper in PDF format)

50.        “GaAs/InGaAs Quantum Well Infrared Photodetector with a Cutoff Wavelength at 35 µm ”, (A. G. U. Perera, S. G. Matsik, H. C. Liu, M. Gao, M. Buchanan, W. J. Schaff and W. Yeo), Applied Physics Letters, 77, 741~743, (2000) (Full paper in PDF format)

49.         GaAs Homojunction Interfacial Workfunction Internal Photoemission (HIWIP) Far-infrared Detectors", (A. G. U. Perera, W. Z. Shen, H. C. Liu, M. Buchanan, and W. J. Schaff), Material Science and Engineering,  B74, 56~60, (2000) (Full paper in PDF format)

48.        "Optical Interference and Nonlinearities in Quantum-well Infrared Photodetectors", (M. Ershov, H.C. Liu, A. G. U. Perera and S. G. Matsik), Physica E, 7,115~119, (2000) (Full paper in PDF format)

47.         "Effect of Interface States on the Performance of GaAs p+ –i Far–infrared Detectors", (A. G. U. Perera,W. Z. Shen and M. Ershov; H. C. Liu and M. Buchanan; S. D. Gunapala, S. V. Bandara, and J. K. Liu; H. H. Ye and W. J. Schaff), JVST A, 18 (2) 597~600, (2000) (Full paper in PDF format)

46.        Effects of Traps on the Dark Current Transients in GaAs/AlGaAs Quantum Well Infrared Photodetectors", ( A. G. U. Perera, S. G. Matsik, M. Ershov, Y. W. Yi, H. C. Liu, M. Buchanan, and Z. R. Wasilewski), Physica E, 7, 130~134, (2000) (Full paper in PDF format)

45.        “Theory of Transient Spectroscopy of Multiple Quantum Well Structures”, (M. Ershov, H. Ruda, A. Shik andA. G. U. Perera), Journal of Applied Physics, 86 (3), 1510-1513, (1999) (Full paper in PDF format)

44.    "GaAs Homojunction Interfacial Workfunction Internal Photoemission (HIWIP) Far-infrared Detectors", (A. G. U. Perera and W. Z. Shen), Journal of the Association of Polish Electrical Engineers, Opto-Electronics Review 7 (3), (1999).

43.        “Negative Capacitance of GaAs Homojunction Far-infrared Detectors”, (A. G. U. Perera, W. Z. Shen, M. Ershov, H. C. Liu, M. Buchanan, and W. J. Schaff), Applied Physics Letters, 74 (21), 3167-3169(1999). (Full paper in PDF format)

42.    “Low-frequency Noise and Interface States in GaAs Homojunction Far-infrared Detectors”, (W. Z. Shen andA. G. U. Perera), IEEE Transactions on Electron Devices, 46 (4), 811-814(1999). (Full paper in PDF format)

41.        "Demonstration of Si homojunction far-infrared detectors ", (A. G. U. Perera, W. Z. Shen, S. G. Matsik, H. C. Liu, M. Buchanan, and W. J. Schaff), Applied Physics Letters, 72 (18),  2307-2309, (1998) (Full paper in PDF format)

40.        "GaAs/AlGaAs Quantum Well Photodetector with 27 micron peak Wavelength", (A. G. U. Perera, W. Z. Shen, S. G. Matsik, H. C. Liu, M. Buchanan, and W. J. Schaff) Applied Physics Letters, 72 (13), 1596-1598, (1998) (Full paper in PDF format)

39.        "Effect of emitter layer concentration on the performance of GaAs p+-i homojunction far-infrared detectors: A comparison of Theory and Experiment" (W. Z. Shen, A. G. U. Perera, M. H. Francombe, H. C. Liu, M. Buchanan and W. J. Schaff) IEEE transactions of Electron Devices, 45 (8), 1671-1677, (1998) (Full paper in PDF format)

38.        "Photoconductivity in homojunction Internal Photoemission Infrared Detectors", (W. Z. Shen and A. G. U. Perera) Infrared Physics and Technology, 39, 329~333, (1998). (Full paper in PDF format)

37.        "Photoconductive Generation Mechanism and Gain in Internal Photoemission Infrared Detectors", (W. Z. Shen and A. G. U. Perera) J. Appl. Phys, 83 (7), 3923-3925, (1998) (Full paper in PDF format)

36.        "Nonuniform vertical Charge Transport and Relaxation in Quantum Well Infrared Detectors", (A. G. U. Perera, V. G. Sylvestrov, S. G. Matsik, H. C. Liu, M. Buchanan, Z. R. Wasilewski and M. Ershov) J. Appl. Phys., 83 (2), 991-997, (1998) (Full paper in PDF format)

35.        "Effect of i layer Parameters on the Performance of Si n-i-n Homojunction Far Infrared Detectors", (H. X. Yuan and A. G. U. Perera) IEEE Transactions on Electron Devices, 44 (12), 2180, (1997). 

34.        "Bias Effects in High Performance GaAs Homojunction Far infrared Detectors", (W. Z. Shen, A. G. U. Perera, H. C. Liu, M. Buchanan, and W. J. Schaff), Applied Physics Letters, 71, 2677, (1997) (Full paper in PDF format)

33.        "Far-infrared Free Hole Absorption in Epitaxial Silicon Films for Homojunction Detectors", (A. G. U. Perera, W. Z. Shen, W. C. Mallard, M. O. Tanner and K. L. Wang), Applied Physics Letters, 71 (4), 515-517, (1997) (Full paper in PDF format

32.        "A Spectroscopic Study of GaAs HIWIP Far infrared Detectors", (W. Z. Shen, A. G. U. Perera, H. X. Yuan, S. K. Gamage, H. C. Liu, M. Buchanan, and W. J. Schaff) Infrared Physics and Technology, 38, 133-138, (1997). (Full paper in PDF format

31.        "GaAs Multilayer p-i FIR detectors", (A. G. U. Perera, H. X. Yuan, S. K. Gamage, W. Z. Shen, H. C. Liu, M. Buchanan, and W. J. Schaff), J. Appl. Phys. 81 (7), 3316-3319, (1997) (Full paper in PDF format)

30.        "Space Charge limited conduction in Si n-i-n Homojunction Far Infrared Detectors", (H. X. Yuan and A. G. U. Perera) J. Appl. Phys, 79 (8), 4418-4425, (1996) ( Full paper in PDF format)

29.        "Space charge analysis of Si n+-i structures with application to far-infrared detectors", (H. X. Yuan and A. G. U. Perera) Solid-State Electronics, 39 (5), 621-628, (1996) (Full paper in PDF format

28.          "Resonant Tunneling Times in Superlattice Structures", (J. W. Choe, H. Hwang, A. G. U. Perera, S. G. Matsik and M. H. Francombe) J. Appl. Phys, 79 (10), 7510-7513, (1996) (Full paper in PDF format)

27.        "Space Charge Analysis leading to Spontaneous Pulsing in Quantum Well Structures" (A. G. U. Perera and S. G. Matsik), Applied Physics Letters, 67, 962-964 (1995) (Full paper in PDF format)

26.        "Homojunction Interfacial Workfunction Internal Photoemission (HIWIP) Infrared Detectors", (A. G. U. Perera) Growth and Characterization of Materials for Infrared Detectors, SPIE's International Symposium on Optical Science, Engineering and Instrumentation, 2554, 143-158, (1995). 

25.        "Chaotic to Periodic Spontaneous Pulsing in Current Driven Silicon p-i-n Structures", (A. G. U. Perera, and S. G. Matsik) Physica D, 84, 615-625, (1995) (Full paper in PDF format

24.         "Dark Current Analysis of Homojunction Infrared Detectors" (H. X Yuan and A. G. U. Perera) Applied Physics Letters, 66, 2262-2264, (1995) (Full paper in PDF format)

23.          "Homojunction Internal Photoemission Far-Infrared Detectors: Photoresponse Performance Analysis", (A. G. U. Perera, H. X. Yuan and M. H. Francombe) J. Appl. Phys, 77 (2),  915-924, (1995) (Full paper in PDF format)

22.        "Space Charge analysis in quantum well structures leading to spontaneous pulsing", (A. G. U. Perera and S. G. Matsik), Applied Physics letters, 67 (7), 962-964 (1995) (Full paper in PDF format

21.        "Device  model for pulsing in Silicon p-i-n Structures", (A. G. U. Perera and S. Matsik) Applied Physics Letters, 64 (7), 878-880, (1994) (Full Paper in PDF Format)

20.         "Evidence For LWIR Emission Using Intersubband Transitions in GaAs/AlGaAs MQW Structures", (A. G. U. Perera) Proc. of the NATO Adv. Res. Workshop, 'Quantum Well Intersubband Transition Physics and Devices', editors., H. C. Liu et al., 525-532, Kluwer Academic Publishers, Netherlands, (1994). 

19.          "Far Infrared Detection with a Si p-i interface and Multilayer Structures", (A. G. U. Perera, J. W Choe, M. H. Francombe, R. E. Sherriff and R. P. Devaty) Superlattices and Microstructures, 14, 123-128, (1993). 

18.        "A Search for Fractional Charges in Silicon Using an Optoelectronic Technique" (A. G. U. Perera, S. Betarbet, Byungsung O and D. Coon) Phys. Rev. Lett., 70, 1053-1056, (1993). 

17.        "GaAs/AlGaAs Superlattice Miniband Detector with 14.5 mm Peak Response" (K. M. S. V. Bandara, J. W. Choe, M. H. Francombe, A. G. U. Perera, and Y. F. Lin) Applied Physics Letters, 60 (24), 3022-3024, (1992) (Full paper in PDF format

16.        "Far Infrared Photoelectric Thresholds of Extrinsic Semiconductor Photocathodes" (A. G. U. Perera, R. E. Sherriff, M. H. Francombe, and R. P. Devaty) Applied Physics Letters, 60 (25), 3168-3170, (1992) (Full Paper in PDF Format)

15.        "Estimates of Infrared Intersubband Emission and Its Angular Dependence in GaAs/AlGaAs superlattice Structures" (J. W. Choe, A. G. U. Perera, M. H. Francombe, and D. D. Coon) Applied Physics Letters, 59 (1), 54-56, (1991) (Full Paper in PDF Format)

14.        "Integrate-and-Fire Coding and Hodgkin-Huxley Circuits Employing Silicon p+-n-n+ diodes", (D. D. Coon and A. G. U. Perera), Neural Networks, 2, 143, (1989). 

13.        "Spiketrain Generation and Current to Frequency Conversion in Silicon Diodes", (D. D. Coon and A. G. U. Perera), Applied Physics Letters, 55, 478, (1989). 

12.        "Interfacial Work Functions and Extrinsic Silicon Infrared Photocathodes", (D. D. Coon, R. P. Devaty, A. G. U. Perera and R. E. Sherriff), App. Phys. Lett., 55, 1738, (1989). 

11.        "Neuronlike Transient Phenomena in Silicon p-i-n Structures", (D. D. Coon and A. G. U. Perera), Solid State Electronics, 31, 851, (1988). 

10.        "New Hardware for Massive Neural Networks," (D. D. Coon and A. G. U. Perera), In "Neural Information Processing Systems", 201-210, Edited by Dana Z. Anderson, A. I. P., New York, (1988). 

9.        "High Speed Switching and Power Dissipation in Heterojunction Double Barrier Diodes", (D. D. Coon and A. G. U. Perera) Superlattices and Microstructures, 4, 713, (1988). 

8.        "Observations of Complex Nonlinear Behavior in the Neuronlike Output of Cryogenically Cooled Silicon Devices", (Ma Shining, A. G. U. Perera and D. D. Coon), Chin. Phys. Lett., 5, 513, (1988). 

7.          "Farey Fraction Frequency Modulation in the Neuronlike Output of Silicon p-i-n Diodes at 4.2K", (D. D. Coon, S. N. Ma and A. G. U. Perera), Phys. Rev. Lett., 58, 1139, (1987).

6.         "Semiconductor Electronic Concepts for Neural Network Emulation", (D. D. Coon and A. G. U. Perera), International Journal of Electronics, 63, 61, (1987). 

5.        "Mode Locked Infrared Sensor", (D. D. Coon and A. G. U. Perera), App. Phys. Lett., 51, 1086, (1987). 

4.        "Integrate-and-Fire Infrared Detectors", (D. D. Coon and A. G. U. Perera), App. Phys. Lett., 51, 1711, (1987). 

3.        "Parallel Asynchronous Focal Plane Array Processing", (D. D. Coon and A. G. U. Perera), International Journal of Infrared and Millimeter Waves, 9, 1037, (1987). 

2.        "Spectral Information Coding by Infrared Photoreceptors", (D. D. Coon and A. G. U. Perera), International Journal of Infrared and Millimeter Waves, 7, 1571, (1986). 

1.         "Spectral Response of an Injection Mode Infrared Detector", (D. D. Coon and A. G. U. Perera), Solid State Electronics, 29, 929, (1986). 



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     PAPERS SELECTED FOR THE VIRTUAL JOURNAL OF NANOSCALE SCIENCE & TECHNOLOGY 

1.        " Heterojunction plasmonic midinfrared detectors ", M. S. Shishodia and A. G. Unil Perera, Journal of Applied Physics 109, 043108 (2011).(Full paper in PDF format)

 

2.         “Wavelength agile superlattice quantum dot infrared photodetector” G. Ariyawansa, A. G. U. Perera, G. Huang, and P. Bhattacharya, Appl. Phys. Lett. 94, 131109 (2009). (Full paper in PDF format)

 

3.         “Bias-selectable tri-color tunneling quantum dot infrared photodetector for atmospheric windows”, ”, G. Ariyawansa, V. Apalkov, A. G. U. Perera, S. G. Matsik, G. Huang, and P. Bhattacharya, Appl. Phys. Lett. 92, 111104 (2008)  (Full paper in PDF format)

 

4.         A Multi-Color Quantum Dot Intersublevel Detector with Photoresponse in the Terahertz Range,”, G. Huang, J. Yang, P. Bhattacharya, G. Ariyawansa, and A. G. U. Perera, Appl. Phys. Lett. 92, 011117 (2008)  (Full paper in PDF format)  

 

5.         "Displacement currents in semiconductor quantum dots embedded dielectric media: A method for room temperature photon

      detection", P. V. V. Jayaweera, A. G. U. Perera, and K. Tennakone, Appl. Phys. Lett. 91, 063114 (2007)  (Full paper in PDF format)

 

6.         Terahertz detection with tunneling quantum dot intersublevel photodetector" X. H. Su, J. Yang, P. Bhattacharya, G. Ariyawansa, and A. G. U. Perera, Appl. Phys. Lett. 89, 031117 (2006)  (Full paper in PDF format)

 

7.         Characteristics of a Tunneling Quantum-dot Infrared Photodetector Operating at Room Temperature P. Bhattacharya, X. H. Su, S. Chakrabarti, G. Ariyawansa, and A. G. U. Perera, Appl. Phys. Lett. 86, 191106 (2005)  (Full paper in PDF format)

 

8.          “Three-color (λ1~3.8  µm, λ1~8.5  µm, and λ1~23.2  µm) InAs/InGaAs quantum-dots-in-a-well detecto, S. Krishna, S. Raghavan, G. von Winckel, A. Stintz, G. Ariyawansa, S. G. Matsik, and A. G. U. Perera, Appl. Phys. Lett. 83, 2745 (2003)  (Full paper in PDF format)

 

9.         Resonant cavity enhancement in heterojunction GaAs/AlGaAs terahertz detectors", D. G. Esaev, S. G. Matsik, M. B. M. Rinzan, A. G. U. Perera, H. C. Liu, and M. Buchanan, J. Appl. Phys. 93, 1879 (2003)  (Full paper in PDF format)

 

10.        Transient Photocurrent Overshoot in Quantum-well Infrared Photodetectors”, V. Letov, M. Ershov, S. G. Matsik, A. G. U. Perera, H. C. Liu, Z. R. Wasilewski, and M. Buchanan, Appl. Phys. Lett. 79, 2094 (2001)  (Full paper in PDF format)

 

11.          Heterojunction Wavelength-Tailorable Far-Infrared Photodetectors with Response out to 70 Microns", A. G. U. Perera, S. G. Matsik, B. Yaldiz, H. C. Liu, A. Shen, M. Gao, Z. R. Wasilewski, and M. Buchanan, Appl. Phys. Lett. 78, 2241 (2001) (Full paper in PDF format)  

 

 

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PROCEEDINGS

  1. “High operating temperature spin-split off band Infrared detectors”, A. G. U. Perera, S. G. Matsik, M. S. Shishodia, and P. K. D. D. P. Pitigala, Proc. SPIE 7660-88, 2010. (INVITED) 

  2. “Performance enhancements of dye sensitized nanostructured solar cells using PbS quantum dots”, P. K. D. D. P Pitigala, K. Tennakone, A. G. U. Perera. Proc. SPIE Vol. 7683, 768318-1-5, 2010. 

  3. "GaAs and GaN Based High Operating Temperature Spin Split-off band Infrared Detectors", A. G. U. Perera, S. G. Matsik, M. S. Shishodia, and R. C. Jayasinghe, Proc. SPIE, 7608, 760823-1 - 760823-11, 2010. (INVITED) 

  4. “GaN-Based Heterojunction Structures for Ultraviolet/Infrared Dual-Band Detection” Perera, A.G.U.; Jayasinghe, R.C.; Ariyawansa, G.; Dietz, N.; Matsik, S.G.; Ferguson, I.T.; Hui Chun Liu;, ‘Nanotechnology Materials and Devices Conference, 2009. NMDC '09. IEEE’, 142 – 147. (IEEE Xplore, doi: 10.1109/NMDC.2009.5167529) 

  5. “THz Sensors Based on Spin Orbit Split off Levels”, (Perera, A. G. U; Jayaweera, P. V. V; Matsik, S. G;), ‘2009 34th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2009)’, 1, 111-112 . (IEEE Xplore, doi: 10.1109/ICIMW.2009.5325760) 

  6. “Multi-Color Infrared Sensing with Superlattice Quantum Dot Structures and Absorption Enhancement Using Surface Plasmons", A. G. U. Perera, G. Ariyawansa, M. S. Shishodia, G. Huang, P. Bhattacharya, M. Buchanan, Z. R. Wasilewski, and H. C. Liu, ‘Sensors, 2009 IEEE’, 1552 – 1556, 2009. (IEEE Xplore, doi: 10.1109/ICSENS.2009.5398479) 

  7.  Ultraviolet-to-Infrared Dual-Band Detectors Based on Quantum Dot and Heterojunction Structures” (A. G. U. Perera), SPIE, 6984, 698432 (2008). (INVITED)

  8. Plasmon Enhancements for FIR Detection, S. G. Matsik, P. V. V. Jayaweera, (A. G. U. Perera, D. H. Huang, H. C. Liu, and M. Buchanan), Sensors, 2007 IEEE, 431 - 434 (2007). (Full paper in PDF format)

  9. Tunneling Quantum Dot Sensors for Multi-Band Infrared and Terahertz Radiation Detection, (G. Ariyawansa, S. Matsik, V. Apalkov, A. G. U. Perera, X. Su, and P. Bhattacharya), Sensors, 2007 IEEE, 503 - 506 (2007). (Full paper in PDF format)

  10. Single and Multi Emitter Terahertz Detectors Using n-Type GaAs/AlGaAs Heterostructures, (A. Weerasekara, R. C. Jayasinghe, M. B. M. Rinzan, S. G. Matsik, A. G. U. Perera, M. Buchanan, H. C. Liu, G. von Winckel, A. Stintz, S. Krishna), Sensors, 2007 IEEE, 507 - 510 (2007). (Full paper in PDF format)

  11.  “Dual band HEIWIP detectors with nitride materials”, (A. G. U. Perera, G. Ariyawansa, M. Alevli, N. Dietz , S. G. Matsik, I. T. Ferguson, H. Luo, A. Bezinger, H. C. Liu), SPIE, 6678, 66780S, (2007).

  12.  “III-V Based THz Detectors and Plasmon Effects” (A. G. U. Perera) SPIE, 6479, 64790O, (2007) .(INVITED)

  13. "Performance improvements of ultraviolet/infrared dual-band detectors"(A. G. U. Perera, G. Ariyawansa, M. B. M. Rinzan, M. Stevens, M. Alevli, N.Dietz, S. G. Matsik, A. Asghar, I. T. Ferguson, H. Luo, A. Bezinger, H. C. Liu) QWIP2006 Proceedings June 18-24, 2006.

  14. "Multi-color tunneling quantum dot infrared photodetectors operating at room temperature" (G. Ariyawansa, A. G. U. Perera, X. H. Su, S. Chakrabarti,and P. Bhattacharya) QWIP2006 Proceedings June 18-24, 2006.

  15. "1/f Noise in Dye-sensitized Solar Cells and NIR Photon Detectors", (P.V.V. Jayaweera, P.K.D.D.P. Pitigala, M.K.I. Seneviratne, A.G.U. Perera and K.Tennakone) QWIP2006 proceedings  June 18-24 2006 

  16. "High Operating Temperature Split-off Band Infrared Detectors", (A. G. U. Perera, S. G. Matsik, P. V. V. Jayaweera, K. Tennakone, H. C. Liu, M. Buchanan G. Von Winckel, A. Stintz, and S. Krishna) QWIP2006 proceedings  June 18-24 2006 

  17. "Si doped n- type GaAs/AlGaAs Terahertz Detectors", (A. Weerasekara, R. Jayasinghe, M. B. M. Rinzan, S. G. Matsik, and, A. G. U. Perera, H. C. Liu, M. Buchanan, G. Von Winckel, A. Stintz and S. Krishna,) QWIP2006 proceedings June 18-24 2006 

  18. “Heterojunction Detectors for THz Applications”, (A. G. U. Perera) SPIE Conference on Optics East 2005,  (2005). (INVITED)  

  19. Quantum Structures for Multiband Photon Detection, (A. G. U. Perera) SPIE Conference on Infrared Photoelectronics, 5957, 59570W-1, (2005).(INVITED) (Full paper in PDF format)

  20. "Heterojunction Far Infrared Photodetectors with a Cutoff Wavelength at 70 Microns", (A. G. U. Perera, S. G. Matsik, V. Y. Letov, B. Yaldiz, H. C. Liu, A. Shen, M. Gao, Z. R. Wasilewski, M. Buchanan, and S. Rolfe) SPIE, 4288, 371-378, (2001).

  21. "Low Dark Current HIWIP Detectors with Resonance Cavity Effect", (A. G. U. Perera, A. L. Korotkov, W. Z. Shen, H. C. Liu, and M. Buchanan), First Georgia Tech Conference on Nanoscience and Nanotechnology, P89, Oct 16-18, (2000).

  22. "Negative Capacitance and Noise Issues in HIWIP Structures", (A. G. U. Perera, W. Z. Shen, H. C. Liu,  M. Buchanan and W. J. Schaff) Proceedings of ECS, 98-21 , 194 ,(1999), (INVITED)

  23. "Novel far-infrared detectors for space applications", (A. G. U. Perera, W. Z. Shen, H. C. Liu, M. Buchanan and W. Schaff) SPIE, 3725, 254-259, (1998).

  24. "Si Homojunction Internal Photoemission Far-Infrared Detectors", (A. G. U. Perera, W. Z. Shen, H. C. Liu, M. Buchanan, M. O. Tanner and K. L. Wang) SPIE, 3553, 154-159, (1998).

  25.  "Barrier Resonances and Capacitances in MQW IR Detectors", (A. G. U. Perera, V. G. Sylvestrov, S. G. Matsik, H. C. Liu, M. Buchanan, Z. R. Wasilewski) Electrochemical Society Proceedings PV 97-33, 132-143, (1998).((INVITED)

  26. "GaAs Homojunction Far-Infrared Detectors for Astronomy Applications", (A. G. U. Perera, W. Z. Shen, M.H. Francombe, M. Shure, H. C. Liu, M. Buchanan and W. Schaff) SPIE, 3354, 39-47, (1998)

  27. "High performance GaAs Homojunction Far Infrared Detectors", (A. G. U. Perera, W. Z. Shen, H. C. Liu, M. Buchanan and W. Schaff) SPIE, 3287,  280-286, (1998).

  28. "Free carrier Absorption in P-type epitaxial Si and GaAs Films for Far Infrared Detection", (A. G. U. Perera, W. Z. Shen, M. O. Tanner, K. L. Wang, and W. Schaff) MRS Symposium Proceedings, 484, 199-204, (1998).

  29. "Homojunction  Interfacial Workfunction Internal Photoemission (HIWIP) Infrared Detectors", (A. G. U. Perera) Growth and Characterization of Materials for Infrared Detectors, SPIE, 2554, 143-158, (1995). (INVITED)

  30. "GaAs Homojunction Interfacial Workfunction Internal Photoemission Far Infrared Detectors", (H. X. Yuan, A. G. U. Perera, M. H. Francombe, S. K. Gamage, H. C. Liu, M. Buchanan and W. J. Schaff) Infrared Detectors for Remote sensing: Physics, Materials, and Devices, Proc. SPIE, 2816, 90, (1996). 

  31. "Novel Infrared Detector using Spontaneous Pulsing in Multi Quantum Well Structures", (A. G. U. Perera, S. G. Matsik and M. H. Francombe) Infrared Detectors and Focal Plane Arrays, Proc. SPIE, 2746, 142, (1996). 

  32. "Pulsing Silicon (Relaxation Oscillator) Neural Nets for Image Processing and Nonlinear Dynamics", (A. G. U. Perera) IASTED International Conference on Modeling and Simulation, 26-28 July 1995, Colombo, Sri Lanka, 229-231, edited by C. W. De Silva and M. H. Hamza.

  33. "Nonlinear Dynamics in a Parallel Neural Network Processor", (A. G. U. Perera, S. G. Matsik and S. Betarbet) Visual Information Processing IV, Proceedings SPIE, 2488, 363-372, (1995). 

  34. "Novel Homojunction Internal Photoemission Far Infrared Detectors", (A. G. U. Perera, H. X. Yuan J. W. Choe and M. H. Francombe ) Proceedings of SPIE, Infrared Detectors and Instrumentation for Astronomy, 2475, 76-87, (1995). 

  35. "Spontaneous Pulsing in Semiconductor Homo and Heterostructures for IR Detectors", (A. G. U. Perera, S. G. Matsik and M. H. Francombe) Proceedings of the third International Symposium on "Long Wavelength IR detectors and Arrays: Physics and Applications III", edited by S. S. Li, M. Z. Tidrow, H. C. Liu and W. A. Beck, PV 95-28, 98-109,(1995). 

  36. "Multilayer Homojunctions as Tunable Far Infrared Detectors", (A. G. U. Perera, H. X. Yuan, M. H. Francombe and J. W. Choe) Proceedings of the First International Symposium on Long Wavelength IR detectors and Arrays: Physics and Applications and the Nineteenth State of the Art Program on Compound Semiconductors (SOTAPOCS XIX) editors., F. Radpour and V. R. McCray, 36-45, (1995). 

  37. "Homojunction Infrared Detector Classification and Analysis", (A. G. U. Perera, H. X. Yuan, M. H. Francombe) Proceedings of the Second International Symposium on "Long Wavelength IR detectors and Arrays: Physics and Applications", edited by V. Swaminathan, Sheng Li, T. S. Faska, H. C. Liu and F. Radpour, PV 94-30, 30-41, (1994). 

  38. "Bifurcations and Chaos in Pulsing Si Neurons", (A. G. U. Perera, S. R. Betarbet and S. G. Matsik) Proceedings of the World Congress on Neural Networks 1994, Lawrence Erlbaum Associates, N.J. IV 704- IV 709, (1994). 

  39. "Nonlinear Dynamics in pulsing artificial neural networks", (A. G. U. Perera and S. R. Betarbet) Proceedings of NOLTA'93, 4, 1311-1314, Dec 5-10 (1993). 

  40. "Multispectral Transient Sensing Using Retinal Concepts in a Parallel Processor", (A. G. U. Perera, S. R. Betarbet and M. H. Francombe) Proceedings of the World Congress on Neural Networks 1993, Lawrence Erlbaum Associates, N.J. IV.835 - IV 838, (1993). 

  41. "A Novel Wavelength Tunable Silicon Detector for Infrared Detection" (A. G. U. Perera, R. E. Sherriff, M. H. Francombe, and R. P. Devaty), Materials Research Society Symposium Proceedings, 261, 119-124, April 29-May 1, (1992). 

  42.  "Photon detection in Parallel Asynchronous Processing", (D. D. Coon and A. G. U. Perera) Proceedings of the SPIE's Visual Communications and Image Processing 90, 1360, 1620 Lausanne, Switzerland, Oct 1-4, (1990). 

  43.  "Parallel Asynchronous Systems and Image Processing Algorithms", (D. D. Coon and A. G. U. Perera), NASA Conference Publication 3053, Proceedings of "Visual Information Processing for Television and Telerobotics", 191, (1989). 

 

 

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  CONFERENCE ABSTRACTS

  1. "Performance enhancements of dye sensitized nanostructured solar cells using PbS quantum dots", P. K. D. D. P. Pitigala, K. Tennakone, and A. G. U. Perera, SPIE (Defense, Security, and Sensing) 2010, 7683-45, Orlando, Florida, April 05 - 09, 2010.  

  2. "Investigation of the Detection and Identification of Herpes Simplex Virus I by FTIR Spectroscopy", J. Titus, C. Filfili, J. Hilliard, and A.G.U. Perera, Sixth Annual Molecular Basis of Disease (MBD) Research Day, May 21, 2010, Georgia State University. 

  3. "Simultaneous Detection of Ultraviolet and Infrared Radiation from a Single Detector", S. G. Matsik, G. Ariyawansa, and A. G. U. Perera, NanoTechnology for Defense Conference 2010, Atlanta, Georgia, May 3-6, 2010. 

  4. "GaAs and GaN Based High Operating Temperature Spin Split-off band Infrared Detectors", A. G. U. Perera, S. G. Matsik, M. S. Shishodia, and R. C. Jayasinghe, SPIE Photonics West 2010, San Francisco, January 23 – 28, 2010 

  5. "Temperature Dependence of Capacitance and AC conductance in MQW structures", (V.G. Sylvestrov, S. G. Matsik, A. G. U. Perera, and H. C. Liu), BAPS, 41, 1659, (1996). 

  6. "Space charge analysis in multi-quantum well structures using C-V measurements.", (A. G. U. Perera and S. G. Matsik, V. G. Silvestrov), BAPS, 41, 739, (1996). 

  7. "Performance Evaluation of Si n+-i-n+ homojunction far infrared detectors including space charge effect.", (A. G. U. Perera and H. X. Yuan), BAPS, 41, 87, (1996). 

  8. "Spontaneous Pulsing in Semiconductor Homo- and Heterostructures Designed as IR detectors.", (A. G. U. Perera), The Electrochemical Society Interface, # 204, Fall 1995, pg 121. 

  9. "Space Charge Effects in Si HIWIP Far-Infrared Detectors.", (A. G. U. Perera and H. X. Yuan), BAPS, 40, 763, (1995). 

  10. "Hopf Bifurcations in Si p-i-n diodes.", (A. G. U. Perera and S. Betarbet), BAPS, 39, 476, (1994). 

  11. "Comparison of a fly visual neural network with a Si p-i-n diode transient sensing network.", (S. R. Betarbet and A. G. U. Perera), BAPS, 39, 600, (1994). 

  12. "A photoresponse mechanism for homojunction FIR detectors.", (H. X. Yuan and A. G. U. Perera), BAPS, 39, 600, (1994). 

  13. "Spontaneous Pulsing in Multiquantum Well Structures.", (S. G. Matsik and A. G. U. Perera), BAPS, 39, 857, (1994). 

  14. "Space charge Generation and Recombination Effects in Multiquantum Well Structures.", (S. G. Matsik and A. G. U. Perera), BAPS, 39, 1810, (1994). 

  15. "Dark Current mechanisms in Si homojunction internal photoemission (HIP) far-infrared (FIR) detectors.", (H. X. Yuan and A. G. U. Perera), BAPS, 39, 1811, (1994). 

  16. "Classification and Analysis of Homojunction Infrared Detection.", (A. G. U. Perera, H. X. Yuan and M. H. Francombe), The Electrochemical Society Interface Fall 1994, pg 123, and Extended Abstracts 186th society meeting, Volume 94-2, pp 398-399, ISBN 1-56677-0831. 

  17. "Hardware implementation of small neural networks with Si p-i-n structures.", (S. Betarbet and A. G. U. Perera), BAPS, 38, 578, (1993). 

  18. "Homojunction Multilayers for Far Infrared Detection.", (A. G. U. Perera, M. H. Francombe, X. M. Feng and J. W. Choe), The Electrochemical Society Interface Fall 1993, pg 110. 

  19. "Visible and IR Transient Sensing in a Parallel Asynchronous Processor", (S. Betarbet, A. G. U. Perera and M. H. Francombe), BAPS, 37, 219, (1992). 

  20. "Extrinsic Silicon for Wavelength Tunable FIR Detection", (A. G. U. Perera, R. E. Sherriff, R. P. Devaty, and M. H. Francombe), BAPS, 37, 580, (1992). 

  21. "A Theoretical Model for Bimodal Pulsing in Liquid Helium Cooled p-i-n Diodes", (S. Matsik and A. G. U. Perera), BAPS, 37, 735, (1992). 

  22. " Optimization of Superlattice Cascade Process for IR Emission Using Complex Energy Method", (J. W. Choe, A. G. U. Perera, K. M. S. V. Bandara, Y. Kuang, and M. H. Francombe), BAPS, 37, 790, (1992) 

  23. "IR Detection at Wavelengths up to 200 microns in Extrinsic Semiconductor Devices" (A. G. U. Perera, R. E. Sherriff, R. P. Devaty and M. H. Francombe) SPIE, 16th International Conference on Infrared and Millimeter waves, Aug 26-30, 1991, Lausanne-Switzerland. 

  24. "An Unconventional High Performance Infrared Detector", (A. G. U. Perera and D. D. Coon), BAPS, 34, 835 (1989). 

  25. "Action Potentials in Silicon Devices at Low Temperatures", (A. G. U. Perera and D. D. Coon), BAPS, 33, 421 (1988). 

  26. "Integrate-and-Fire Dynamics and Spiketrain Information Coding in Neuron Equivalent Circuits Employing Silicon Diodes", (A. G. U. Perera and D. D. Coon) Neural Networks 1 - Supplement 1, 379 (1988). 

  27. "High Dynamic Range Infrared Detectors", (A. G. U. Perera and D. D. Coon), Conf. Digest, 13th Int. Conf. on Infrared and Millimeter waves, SPIE Vol. 1039, 209 (1988). 

  28. "Far Infrared Detection Without Preamplifiers", (A. G. U. Perera and D. D. Coon), Conf. Digest, 12th Int. Conf. on Infrared and Millimeter Waves, IEEE catalog number 87CH2490-1, 235 (1987).

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