期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 86, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4905535
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资金
- U.S. Department of Energy [DE-AC36-08-GO28308]
- National Renewable Energy Laboratory
- Bayh-Dole funds
Fiber-fed time-resolved photoluminescence is demonstrated as a tool for immediate process feedback after deposition of the absorber layer for CuInxGa1-xSe2 and Cu2ZnSnSe4 photovoltaic devices. The technique uses a simplified configuration compared to typical laboratory time-resolved photoluminescence in the delivery of the exciting beam, signal collection, and electronic components. Correlation of instrument output with completed device efficiency is demonstrated over a large sample set. The extraction of the instrument figure of merit, depending on both the initial luminescence intensity and its time decay, is explained and justified. Limitations in the prediction of device efficiency by this method, including surface effect, are demonstrated and discussed. (C) 2015 AIP Publishing LLC.
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