Journal
PROGRESS IN PHOTOVOLTAICS
Volume 20, Issue 7, Pages 855-861Publisher
WILEY
DOI: 10.1002/pip.2268
Keywords
thin film solar cells; Cd-free buffer layers; ILGAR; indium sulfide
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In2S3 buffer layers have been prepared using the spray ion layer gas reaction deposition technique for chalcopyrite-based thin-film solar cells. These buffers deposited on commercially available Cu(In,Ga)(S,Se)2 absorbers have resulted in solar cells with certified record efficiencies of 16.1%, clearly higher than the corresponding CdS-buffered references. The deposition process has been optimized, and the resulting cells have been studied using currentvoltage and quantum efficiency analysis and compared with previous record cells, cells with a thermally evaporated In2S3 buffer layer and CdS references. Copyright (c) 2012 John Wiley & Sons, Ltd.
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