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High Performance a-Si Solar Cells and Narrow Bandgap Materials

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High performance a-Si solar cells were developed. A conversion efficiency of 11.5% was achieved for a textured TCO/p-SiC/in/Ag structure with a size of 1 cm2 using the high quality i-layer fabricated by a new consecutive, separated reaction chamber apparatus. A conversion efficiency of 9.0% was obtained with a size of 10cm × 10cm. A high quality a-SiGe:H:F, which is a new narrow bandgap material for a-Si solar cells, was fabricated by a glow discharge decomposition of SiF4 + GeF4 + H2.

A photo-CVD method was investigated in order to improve the interface properties of a-Si solar cells. A conversion efficiency of 11.0% was obtained with a solar cell in which the p-layer is fabricated by the photo-CVD method. a-SiGe:H films were fabricated by the photo-CVD method for the first time as a narrow bandgap material for multi-bandgap a-Si solar cells.

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Nakano, S., Kishi, Y., Ohnishi, M. et al. High Performance a-Si Solar Cells and Narrow Bandgap Materials. MRS Online Proceedings Library 49, 275–280 (1985). https://doi.org/10.1557/PROC-49-275

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  • DOI: https://doi.org/10.1557/PROC-49-275

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