Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Shamara Collins"'
Publikováno v:
Organic Electronics. 62:304-310
Organo-metal halides are the new generation of functional materials formed on a perovskite framework, ABX3. Despite the high throughput of these semiconductors, they are prone to long-term degradation. A degradation process that is still far from und
Autor:
Yong-Hang Zhang, Sudhajit Misra, Vasilios Palekis, Don L. Morel, Shamara Collins, Chris Ferekides, Michael A. Scarpulla, Chih An Hsu, Imran Khan
Publikováno v:
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC).
The effect of Indium (In) doping on CdTe thin film solar cells was investigated. CdTe thin films were deposited using the elemental vapor transport (EVT) technique under various Cd/Te gas phase ratios and In vapor concentrations. TCO/Buffer/n-CdTe/p-
Publikováno v:
2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC).
Se profiles in CST (CdSeXTe1-X) films formed by annealing CdTe/CdSe bilayers has been studied using transmission electron microscopy (TEM) and photoluminescence (PL). The effect of CdSe layer thickness and CdCl 2 annealing conditions on the alloy lay
Autor:
V. Evani, Sudhajit Misra, Michael A. Scarpulla, Chris Ferekides, Imran Khan, Vasilios Palekis, Mark C. Lonergan, Don L. Morel, Shamara Collins
Publikováno v:
2017 IEEE 44th Photovoltaic Specialist Conference (PVSC).
The CdTe solar cell back contact interface gets activated by means of thermal annealing. Depending on the back contact (BC) material the annealing time can vary between 20 - 60 minutes. In this study fast contact anneal times - $< 90$ sees - are inve
Publikováno v:
2017 IEEE 44th Photovoltaic Specialist Conference (PVSC).
In this paper we report results on Cdxex'Iei.x based solar cells, fabricated by inter-diffusing CdTe/CdSe bilayers. The effect of the CdCh heat treatment (HT) carried out at various temperatures on bilayers with different CdSe thicknesses has been in
Autor:
Vasilios Palekis, Chih An Hsu, Don L. Morel, V. Evani, Chris Ferekides, Shamara Collins, Imran Khan
Publikováno v:
2017 IEEE 44th Photovoltaic Specialist Conference (PVSC).
Low temperature photoluminescence (PL) was used to study the effect of in-situ phosphorus (P) doping on polycrystalline Cadmium Telluride (CdTe) deposited by the Elemental Vapor Transport (EVT) technique. The CdTe films discussed in this paper were d
Publikováno v:
2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC).
The defect distribution of polycrystalline Cadmium Telluride (CdTe) deposited by Close Spaced Sublimation (CSS) is investigated using Deep Level Transient Spectroscopy (DLTS). CdTe solar cells were fabricated with different post deposition processing
Publikováno v:
2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC).
Phosphorus (P) doping of polycrystalline CdTe films deposited by Elemental Vapor Transport is being investigated. The structure and morphology have been studied using XRD and SEM. XRD studies indicated highly oriented CdTe films along with the presen
Autor:
Khan, Michael A. Scarpulla, Vasilios Palekis, John M. Walls, Sudhajit Misra, Ali Abbas, Chris Ferekides, Shamara Collins, V. Evani
Publikováno v:
2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC).
The CdCl 2 heat treatment (HT) is one of the most critical steps in the fabrication of high efficiency CdTe solar cells. In this study a laser based CdCl 2 treatment is presented. A high power near infrared (808 nm) diode laser was used for laser ann
Publikováno v:
2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC).
The stoichiometry of CdTe plays an important role in the formation of point defects and can therefore impact solar cell performance. In this study, the effect of Cu and Cl on CdTe films is investigated as a function of stoichiometry. The stoichiometr