12.0% Efficiency on Large-Area, Encapsulated, Multijunction nc-Si:H-Based Solar Cells
| Autor: | G. Pietka, D. Beglau, Subhendu Guha, Jeff Yang, Frank Shengzhong Liu, Arindam Banerjee, Tining Su |
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| Rok vydání: | 2012 |
| Předmět: |
Glow discharge
Materials science Silicon business.industry Photovoltaic system Analytical chemistry Nanocrystalline silicon chemistry.chemical_element Condensed Matter Physics Nanocrystalline material Electronic Optical and Magnetic Materials Amorphous solid chemistry Optoelectronics NC-SI Electrical and Electronic Engineering Thin film business |
| Zdroj: | IEEE Journal of Photovoltaics. 2:104-108 |
| ISSN: | 2156-3403 2156-3381 |
| Popis: | 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-cm2 encapsulated cell and (2) stable aperture-area efficiency of 11.2% on a 400-cm2 encapsulated cell. |
| Databáze: | OpenAIRE |
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