High-Performance Amorphous Silicon Thin Film Solar Cells Prepared at 100 degrees C: Toward Flexible Building-Integrated Photovoltaics
- Authors
- Kang, Dong-Won; Ryu, Jun; Konagai, Makoto
- Issue Date
- Sep-2019
- Publisher
- KOREAN INST METALS MATERIALS
- Keywords
- Amorphous silicon; Low temperature; Thin film; Solar cells; Chemical vapor deposition
- Citation
- ELECTRONIC MATERIALS LETTERS, v.15, no.5, pp 623 - 629
- Pages
- 7
- Journal Title
- ELECTRONIC MATERIALS LETTERS
- Volume
- 15
- Number
- 5
- Start Page
- 623
- End Page
- 629
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/36389
- DOI
- 10.1007/s13391-019-00161-8
- ISSN
- 1738-8090
2093-6788
- Abstract
- For low-cost and lightweight polymer/plastic substrates in flexible building-integrated photovoltaic (BIPV) modules, low-temperature processing is essential. Amorphous silicon (a-Si:H) requires processing at a temperature of 200-250 degrees C by plasma-enhanced chemical vapor deposition to obtain satisfactory optoelectronic properties, which limits such substrates in terms of thermal budget. This study is focused on the fabrication of p-i-n-type a-Si:H solar cells at relatively low temperatures (100 degrees C). Intrinsic a-Si:H films with large optical gaps (1.83 eV) were prepared at 100 degrees C using a high hydrogen dilution ratio. In addition, p-type amorphous silicon oxide and n-type microcrystalline silicon oxide films with large optical gaps and suitable conductivities were prepared at 100 degrees C using a gas mixture containing the dopant B2H6 or PH3 and CO2. Finally, an a-Si:H p-i-n cell was fabricated at 100 degrees C; it exhibited an excellent power conversion efficiency of 9.0%, which was higher than those reported for a-Si:H thin film photovoltaics prepared at 100 degrees C. We believe that this study will open promising routes for the development of high-performance and flexible BIPVs. [GRAPHICS] .
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Collections - College of Engineering > School of Energy System Engineering > 1. Journal Articles
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