期刊
PROGRESS IN PHOTOVOLTAICS
卷 20, 期 5, 页码 582-587出版社
WILEY
DOI: 10.1002/pip.2162
关键词
CIGSe; ultrathin solar cells; back contact; lift-off; reflectivity; light trapping
资金
- ANR's HABISOL program within the ULTRACIS project
An innovative approach combining chemical etching and a lift-off process, which allows back contact processing after CIGSe deposition, permitted to use Au as a highly reflective back contact in ultrathin CIGSe solar cells. The Au back contact does not degrade the other parameters of the cell, as good ohmicity on CIGSe is achieved. An important photocurrent increase compared with regular Mo back contact solar cells is achieved by the enhanced light trapping effect due to the back reflector, leading to an absolute efficiency increase of +2.5% for a CIGSe thickness of 0.4?mu m. This approach could be used for further investigations in improving the back side of ultrathin CIGSe solar cells. Copyright (c) 2012 John Wiley & Sons, Ltd.
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