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Author Albin, D. S. ♦ Mahathongdy, Y. ♦ Wolden, C. A. ♦ Baldwin, R. M.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword SOLAR ENERGY ♦ CADMIUM COMPOUNDS ♦ TELLURIUM COMPOUNDS ♦ TEMPERATURE DISTRIBUTION ♦ SOLAR CELLS ♦ CADMIUM SULFIDES ♦ CADMIUM TELLURIDES ♦ FABRICATION ♦ HEAT TREATMENTS ♦ TEMPERATURE RANGE 0400-1000 K ♦ TIME DEPENDENCE ♦ TEMPERATURE GRADIENTS ♦ STABILITY ♦ EFFICIENCY ♦ SURFACE TREATMENTS
Abstract A dry vapor treatment of CdCl{sub 2} is being developed as an alternative approach to the conventional solution CdCl{sub 2} treatment of CdS/CdTe devices. In this alternative process, the CdS/CdTe substrates are vapor treated in a close-spaced sublimation configuration. A 16-run Plackett-Burman screening experiment identified source temperature, substrate temperature, and treatment time as being the most significant parameters in the process. Subsequently, a 20-run Central Composite Design showed that a source temperature of 380{endash}390&hthinsp;{degree}C, a temperature gradient ({Delta}T) of 5&hthinsp;{degree}C, and a time of 10 minutes provides the most process tolerant combination, yielding a total-area efficiency of 12.6{percent}. A strong interaction between {Delta}T and treatment time was also identified. The model indicated that for a small {Delta}T, device performance improved with decreasing time, whereas at larger values of {Delta}T, performance increased with increasing time. {copyright} {ital 1999 American Institute of Physics.}
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 1999-03-01
Publisher Department National Renewable Energy Laboratory
Publisher Place United States
Volume Number 462
Issue Number 1
Technical Publication No. CONF-980935-
Organization National Renewable Energy Laboratory


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