Zobrazeno 1 - 10 of 870 pro vyhledávání: '"A. G. U. Perera"'
1
Usage of Ionic Liquid Electrolyte in Tin and Zinc Oxide Composite Dye-sensitized Solar Cells
Autor: Landewatte Ajith de Silva, Kirthi Tennakone, Sunil Dehipawala, A. G. U. Perera, K.D.M.S.P.K. Kumarasinghe, G.R.R.A. Kumara
Publikováno v: Chemistry Letters. 49:1470-1472
Though dye-sensitized solar cells (DSCs) made from less photo-catalytically active tin and zinc oxides are inefficient, composite tin-zinc oxide films yield efficiencies comparable to those fabrica...
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::43f260933c37b60a1b8f7ad82fd8b809
https://doi.org/10.1246/cl.200535
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2
Optical Properties of Alq3/TiO2 BDR Structure Processed by Spin Coating Technique
Autor: T M W J Bandara, L. Ajith DeSilva, Sarahn Nazaret, A. G. U. Perera
Publikováno v: MRS Advances. 4:661-666
One-dimensional hybrid Distributed Bragg Reflector (DBR) is constructed using Tris (8-hydroxy) quinoline aluminum (Alq3) molecules and Titanium dioxide (TiO2) nanoparticles via spin coating process. Light emission from thin films of low molecular wei
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d0da179f6b609e3c8333290a66e900b
https://doi.org/10.1557/adv.2019.22
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4
Broad absorption natural dye (Mondo-Grass berry) for dye sensitized solar cell
Autor: Ryan Landry, Victoria Martin, A. G. U. Perera, P. K. D. D. P. Pitigala, L. Ajith DeSilva, Javier E. Hasbun, T M W J Bandara, Anne Gaquere-Parker
Publikováno v: Journal of Materials Science: Materials in Electronics. 28:7724-7729
Two major drawbacks in dye-sensitized solar cells (DSSC) are the narrow spectral response and the short-term stability. Research on development of artificial dyes for a broad frequency response is a major field of research today. The work presented h
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a9224c8fa5f512e8cb239c1a5c19b106
https://doi.org/10.1007/s10854-017-6466-9
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5
Effects of physical orientation of dye molecules and molecular orbitals on performance of solid-state dye sensitized solar cells
Autor: P. K. D. D. P. Pitigala, Maged Henary, A. G. U. Perera
Publikováno v: Mater Today Proc
Performance of Dye-sensitized devices depends on the photon absorption and carrier injection properties of the sensitizer (dye). The orientation of the dye molecule affects the photon absorption cross-section, injection efficiency and carrier transpo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9f0c208d8f9bf1a55c538dc56e2e20de
https://europepmc.org/articles/PMC7949483/
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6
Study of infrared photodetectors with wavelength extension mechanism
Autor: Li Chen, Dilip Chauhan, A. G. U. Perera, Lianhe Li, Edmund H. Linfield
The III-V semiconductor heterostructure-based photodetectors have been studied extensively for infrared detection, from near-infrared (NIR) to far-infrared (FIR) region. Due to the mature material system, GaAs/AlxGa1-xAs heterostructures are attracti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::293ba4f08f350d4af35ba35b8219da33
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7
Low-frequency noise properties of p-type GaAs/AlGaAs heterojunction detectors
Autor: P. K. D. D. P. Pitigala, Yan-Feng Lao, A. G. U. Perera, Seyoum Wolde, Suraj P. Khanna, Edmund H. Linfield, Lianhe Li
Publikováno v: Infrared Physics & Technology. 78:99-104
We have measured and analyzed, at different temperatures and bias voltages, the dark noise spectra of GaAs/AlGaAs heterojunction infrared photodetectors, where a highly doped GaAs emitter is sandwiched between two AlGaAs barriers. The noise and gain
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::55ecde555feed637f1f64262987d34c4
https://doi.org/10.1016/j.infrared.2016.07.018
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8
Heterojunction and superlattice detectors for infrared to ultraviolet
Autor: A. G. U. Perera
Publikováno v: Progress in Quantum Electronics. 48:1-56
The interest in Infrared and Ultraviolet detectors has increased immensely due to the emergence of important applications over a wide range of activities. Detectors based on free carrier absorption known as Hetero-junction Interfacial Workfunction In
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39aa51e8f0c7ef0fe1c6249a306e9730
https://doi.org/10.1016/j.pquantelec.2016.05.001
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9
Band Offsets of III–V and II–VI Materials Studied by Temperature-Dependent Internal Photoemission Spectroscopy
Autor: Yan-Feng Lao, A. G. U. Perera, Priyalal Wijewarnasuriya, Sanjay Krishna
Publikováno v: Journal of Electronic Materials. 45:4626-4630
The band offset at the interface of a heterojunction is one of the most important parameters determining the characteristics of devices constructed from heterojunction. Accurate knowledge of band offsets and their temperature dependence will allow on
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5a50d20505090882361d8ed56971823
https://doi.org/10.1007/s11664-016-4729-5
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10
Physics of Internal Photoemission and Its Infrared Applications in the Low-Energy Limit
Autor: Y. F. Lao, A. G. U. Perera
Publikováno v: Advances in OptoElectronics, Vol 2016 (2016)
Internal photoemission (IP) correlates with processes in which carriers are photoexcited and transferred from one material to another. This characteristic allows characterizing the properties of the heterostructure, for example, the band parameters o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1738eeafb4c262ea2395749f0364171e
https://doi.org/10.1155/2016/1832097
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