Device for manufacturing large-surface, tape-shaped silicon bodi

Details Device for manufacturing large-surface, tape-shaped silicon bodi Device for manufacturing large-surface, tape-shaped silicon bodi

1983-07-11

1986-01-14

Richman, Barry S.

Coating apparatus

Immersion or work-confined pool type

Capillary passages or barometric column feed

118405, 118419, 118429, 156617SP, 156617H, 422249, B05C 315, B05C 1102

Patent

active

045639760

ABSTRACT:
In an exemplary embodiment, tape-shaped silicon bodies for solar cells are formed by continuous coating of a carrier body having a mesh structure. A melt bath receives the silicon melt and has a floor part with capillary openings therein for supplying the melt, the capillary openings leading perpendicularly toward the exterior of the vat and proceeding parallel to one another, and wherein a channel for the guidance of the carrier body proceeding in a horizontal direction is disposed below the melt vat in the region of the capillary openings. The guide channel for the carrier body can also be disposed above a body with capillaries proceeding parallel in a vertical direction, the body being partially immersed in the vat containing the silicon melt for the purpose of supplying the melt via the capillaries. The devices enable continuous tape drawing from a silicon melt wherein convection currents are avoided in the melt.

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NASA Tech. Brief, Winter 1977, Inexpensive Silicon Sheets for Solar Cells, Caltech/JPL, Pasadena, Calif. pp. 432-433.

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