Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-27T01:38:35.350Z Has data issue: false hasContentIssue false

Requirements for TCO Substrate in Si-based Thin Film Solar Cells -Toward Tandem

Published online by Cambridge University Press:  01 February 2011

Takuji Oyama
Affiliation:
[email protected], Asahi Glass Co., Ltd., Research Center, 1150 Hazawa-cho, Yokohama, N/A, Japan
Mika Kambe
Affiliation:
[email protected], Asahi Glass Co., Ltd., Research Center, Yokohama, 221-8755, Japan
Naoki Taneda
Affiliation:
[email protected], Asahi Glass Co., Ltd., Research Center, Yokohama, 221-8755, Japan
Kunio Masumo
Affiliation:
[email protected], Asahi Glass Co., Ltd., Research Center, Yokohama, 221-8755, Japan
Get access

Abstract

Newly developed SnO2:F films having “double–texture (W-texture)” were evaluated in terms of optical and electrical properties and compared with Asahi type-U substrate. “W-textured” transparent conductive oxide (TCO) film was composed of a combination of 300-500nm large hills and small pyramidal texture covering them. “W-textured” TCO could show a large haze value exceeding 80% even at 800nm. Microcrystalline Si (μc-Si:H) thin film solar cells were fabricated on these TCOs and characterized. The result showed that a quantum efficiency of μc-Si:H solar cells was improved with “W-textured” TCOs significantly in longer wavelength region.

Type
Research Article
Copyright
Copyright © Materials Research Society 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Kim, W. Y. Shibata, A. Kazama, Y. Konagai, M. and Takahashi, K.Optimum Cell Design for High-Performance A-Si: H Solar Cells Prepared by Photo-CVD”, Japan Journal Appl. Phys., 28, 311 (1989).Google Scholar
2 Iida, H. Mishuku, T. Ito, A. and Hayashi, Y.The structure of natively texturedSnO2 film and its application to an optical confinement-type a-Si:H solar cell”, IEEE Trans. On Electron Devices, ED-34, 271 (1987)Google Scholar
3 Konagai, M. Hiza, S. Ohli, K. and Yamada, A. “0.5ím-Thick íc-Si Solar Cell Grown by Photo-CVD on Highly Textured SnO2”, Proceedings of the 3rd Word Conference on Photovoltaic Energy Conversion, p.1605, (2003).Google Scholar
4 Kambe, M. Fukawa, M. Taneda, N. Yoshikawa, Y. Sato, K. Ohki, K. Hiza, S. Yamada, A. and Konagai, M. “Improvement of Light-Trapping Effect on Microcrystalline Silicon Solar Cells by Using High Haze Transparent Conductive Oxide Films”, Proceedings of the 3rd Word Conference on Photovoltaic Energy Conversion, p.1812, (2003).Google Scholar
5 Krc, J. Brecl, K. Smole, F. and Topic, M.The effects of enhanced light trapping in tandem micromorph silicon solar cells”, Sol. Energy Mater. Sol., Cells 90, (2006), 3339 Google Scholar
6 Taneda, N. Oyama, T. and Sato, K. “Light Scattering Effects of Highly Textured Transparent Conductive Oxides Films”, Technical Digest of the PVSEC-17, 2007, 309312 Google Scholar
7 Kambe, M., Masumo, K., Taneda, N., Oyama, T. and Sato, K., “Improvement of Light-Trapping Effect on Microcrystalline Silicon Thin Film Solar Cells Fabricated on High Haze Transparent Conductive Oxide Films”, Technical Digest of the PVSEC-17, 2007, 11611162 Google Scholar
8 Sato, K. Gotoh, Y. Hayashi, Y. Adachi, K. and Nishimura, H. Reports Res. Lab. Asahi Glass Co., Ltd. 42, 129 (1992)Google Scholar
9 Mizuhashi, M. Gotoh, Y. and Adachi, K.Texture Morphology of SnO2: F Films and Cell Reflectance”, Japan Journal Appl. Phys., 27, 2053 (1988).Google Scholar
10 Ikeda, T. Sato, K. Hayashi, Y. Wakayama, Y. Adachi, K. Nishimura, H.Surface microstructures of ZnO coated SnO2: F films”, Solar Energy Materials and Solar Cells, 34, 379 (1994)Google Scholar