Thin-film solar cell

Details Thin-film solar cell Thin-film solar cell

1993-09-03

1994-09-06

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

136256, 437 4, H01L 310392, H01L 310368, H01L 3104, H01L 3118

Patent

active

053445007

ABSTRACT:
A method for producing a thin-film solar cell having a thin-film active layer on a graphite sheet substrate includes the steps of adhering two sheets of graphite together, forming semiconductor thin films serving as active layers on second main surfaces of the two sheets of graphite, and separating the two sheets of graphite from each other. In this structure, stress caused by a difference in expansion coefficients between the upper sheet and the semiconductor thin film is cancelled by stress caused by a difference in expansion coefficients between the lower sheet and the semiconductor thin film. Therefore, curvature of the substrates is prevented whereby subsequent process steps are easily carried out. In addition, the number of products per unit time is doubled, thereby increasing productivity.

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T. F. Ciszek et al., Conference Record, 14th IEEE Photovoltaic Specialists Conf. (1980), pp. 397-399.
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Chu, "Polycrystalline Silicon Layers For Solar Cells", Journal of Vacuum Science Technology, vol. 12, No. 1975, pp. 912-915 (Jul./Aug.).
Graef et al., "Enhanced Crystallinity of Silicon Films Deposited By CVD On Liquid Layers (CVDOLL Process): Silicon On Tin Layers In The Presence of Hydrogen Chloride", Journal of Applied Physics, vol. 48, No. 9, 1977, pp. 3937-3940 (Sep.).
Chu et al., "Deposition And Properties Of Silicon On Graphite Substrates", Journal of the Electrochemical Society, vol. 123, No. 1, 1976, pp. 106-110 (Jan.).
Kerber et al., "Large Grain Polycrystalline Silicon Films On Graphite For Solar Cell Applications", 17th IEEE Photovoltaic Specialists Conference, 1984, pp. 275-280.
Kazmerski, "An Overview Of Thin-Film Polycrystalline Silicon Research And Development", 14th IEEE Photovoltaic Specialists Conference, 1980, pp. 281-286.

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