Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Patent
1993-03-24
1995-05-30
Weisstuch, Aaron
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
136249, 437 4, 437100, 437108, 437109, 257458, H01L 31075, H01L 3120
Patent
active
054197830
ABSTRACT:
A photovoltaic device has a transparent substrate, a transparent electrode layer, a photovoltaic layer, and a back electrode which are stacked in this order. The photovoltaic layer has a p-type a-SiC layer provided on the transparent electrode layer, a buffer layer provided on the p-type a-SiC layer, a photosensitive layer provided on the buffer layer, and an n-type semiconductor layer provided on the photosensitive layer. The buffer layer is an a-SiC layer first deposited on the p-type a-SiC layer and then subjected to a plasma treatment. The plasma treatment should be carried out using a gas selected from a group consisting of hydrogen (H.sub.2), Argon (Ar), Helium (He), Neon (Ne), Krypton (Kr), and Xenon (Xe). In the device, the buffer layer may be composed of a microcrystalline SiC layer or an amorphous SiC layer. The buffer layer may have a thickness ranging from about 10 .ANG. to about 100 .ANG., and may be formed by a plasma-CVD process.
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"A Study on the Surface Reaction in the Growth of Amorphous Silicon by Intermittent Deposition Method", T. Ishimura, Y. Okayasu, H. Yamamoto, K. Fukuki, Twentieth IEEE Photovoltaic Specialists Conference-1988, vol. 1, pp. 114-118.
Iwata Hiroshi
Noguchi Shigeru
Sano Keiichi
Sanyo Electric Co,. Ltd.
Weisstuch Aaron
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