期刊
IEEE JOURNAL OF PHOTOVOLTAICS
卷 2, 期 2, 页码 104-108出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOTOV.2011.2181823
关键词
Amorphous; nanocrystalline; photovoltaic; silicon; solar cells; thin film
资金
- Department of Energy under the Solar America Initiative (SAI) [DE-FC36-07GO17053]
Because of its superior long-wavelength response and stability against light-induced degradation, hydrogenated nanocrystalline silicon (nc-Si:H) has become a promising candidate to replace hydrogenated amorphous silicon-germanium alloy (a-SiGe:H) in multijunction thin-film silicon solar cells. In this paper, we report on the development of our proprietary high-frequency (HF) glow discharge deposition technology for nc-Si:H solar cells that has resulted in high-quality nc-Si: H materials with good spatial uniformity. We studied the HF-deposited nc-Si: H material using various analytical techniques. We fabricated a-Si:H/nc-Si:H/nc-Si:H triple-junction solar cells that are deposited on textured Ag/ZnO back reflectors. Large-area cells were fabricated and encapsulated using our proprietary lightweight flexible encapsulants. National Renewable Energy Laboratory (NREL) has confirmed 1) initial aperture-area efficiency of 11.8% on an 807.8-cm(2) encapsulated cell and 2) stable aperture-area efficiency of 11.2% on a 400-cm(2) encapsulated cell.
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