Post Hydrogen Treatment Effects of Boron-doped a-SiC:H p-Layer of a-Si:H Solar Cell Using a Mercury-Sensitized Photo-Chemical Vapor Deposition Method
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概要
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Post hydrogen treatment effects of boron-doped hydrogenated amorphous silicon carbide (a-SiC:H) film used as a p-layer of p/i/n type amorphous silicon based solar cells using a mercury-sensitized photochemical vapor deposition method were investigated by measuring the thickness, electrical, and optical properties of the film before and after hydrogen treatment. It was found that the boron-doped a-SiC:H film was simultaneously etched and passivated by the treatment. The performance of the cell with a hydrogen treated p-layer was improved by ∼7% due to an increase in open circuit voltage (V oc) and fill factor (F.F.), compared to that of the untreated cell, although the p-layer thickness was nearly identical in both cases. The increase in V oc and F.F. could be explained by an increase in the built-in potential due to a decrease in the film activation energy. This electrical property improvement was well explained by the passivation effect of a SiH2/SiH ratio decrease of the film calculated by FTIR spectra. These film changes by post hydrogen treatment are considered to occur in the bulk of the boron-doped a-SiC:H film.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 1997-10-15
著者
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Lim Koeng
Department Of Electrical Engineering And Computer Science Korea Advanced Institute Of Science And Te
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Jang Jae
Department of Ceramic Engineering, Yonsei University, Seoul 120-749, Korea
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Lim Koeng
Department of Electrical Engineering, Korea Advanced Institute of Science and Technology,
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