Method of producing thin-film solar cell

Details Method of producing thin-film solar cell Method of producing thin-film solar cell

1992-12-18

1995-03-14

Weisstuch, Aaron

Fishing, trapping, and vermin destroying

136258, 148DIG135, 437 2, 437233, 437234, 437966, 437967, 437974, H01L 3118

Patent

active

053977130

ABSTRACT:
In a method of producing a thin-film solar cell, a graphite sheet in which the breaking stress in a thickness direction is smaller than the breaking stress in a direction perpendicular to the thickness direction is adhered to a heat resistant substrate, a semiconductor thin film is formed on the graphite sheet in a high temperature process, a second substrate for supporting the semiconductor thin film is adhered to the semiconductor thin film, and the graphite sheet is broken by applying a mechanical stress to the heat resistant substrate and the second substrate. The semiconductor thin film is reliably supported by the heat resistant substrate during high temperature processing and easily removed from the heat resistant substrate by breaking the graphite sheet. In addition, since the graphite sheet has an anisotropic breaking stress, fragments of the graphite sheet remaining on the surface of the semiconductor thin film are easily removed. As a result, a high quality thin film solar cell is produced reliably at low cost.

REFERENCES:
patent: 4131659 (1978-12-01), Authier et al.
patent: 4238436 (1980-12-01), Hill et al.
patent: 4370288 (1983-01-01), Rice, Jr. et al.
patent: 4445965 (1984-05-01), Milnes
Filonov et al, "Development of the Two-Shaping-Elements (TSE) Method for Silicon Sheet Growth", Journal of Crystal Growth vol. 104 (1990) pp. 98-101.
Kirkpatrick et al, "A Nonconventional Approach to Thin Film Cell Fabrication", IEEE 1978, pp. 1342-1346.
T. L. Chu, "Silicon Films on Foreign Substrates for Solar Cells" Journal of Crystal Growth vol. 39, (1977) pp. 45-60.

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