Device for asymmetrically coating a tape-shaped carrier body wit

Details Device for asymmetrically coating a tape-shaped carrier body wit Device for asymmetrically coating a tape-shaped carrier body wit

1983-07-11

1985-03-19

Lawrence, Evan K.

Coating apparatus

Solid member or material acting on coating after application

Heated or cooled member

118401, 118405, 118DIG2, B05C 315, B05C 1102

Patent

active

045052212

ABSTRACT:
Apparatus and method for asymmetrically coating a tape-shaped carrier body with crystallized silicon for further processing into solar cells. In an exemplary embodiment a carrier body in the form of a graphite mesh is to be drawn through a guide channel leading from the floor of a melt vat and is moistened by the melt. The silicon is caused to crystallize above the melt vat because of a temperature gradient generated at right angles relative to the path of the coated carrier body. The temperature gradient can, for example, be produced by means of single-sided heating, or by a plate-shaped body extending from the melt parallel to the carrier body, or by guide lips with upper boundaries exhibiting different heights and widths. The method and apparatus serve for the continuous manufacture of silicon tapes for solar cells.

REFERENCES:
patent: 4171991 (1979-10-01), Lindmayer
patent: 4251570 (1981-02-01), Zook
patent: 4252861 (1981-02-01), Heaps et al.
Belouet, The Growth of Polysilicon Sheets on Carbon Substrates by the RAD Process, Electrochem. Meeting, St. Louis, U.S.A., 5/16/80, abstract No. 327, pp. 817-818.

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