Process for making solar cell base material

Details Process for making solar cell base material Process for making solar cell base material

C - Chemistry, Metallurgy

30

B

148/3.7

C30B 29/06 (2006.01) C30B 15/02 (2006.01) C30B 15/06 (2006.01)

Patent

CA 1149710

PROCESS FOR MAKING SOLAR CELL BASE MATERIAL ABSTRACT OF THE DISCLOSURE Competitive current generation by the exploitation of solar energy requires cheap solar cells. A process is described which makes it possible to manufacture from silicon a base material for solar cells of this type in an economical manner and in large quantities. This is achieved by bringing silicon from a supply container into contact with a non-elemental lubricating melt, which is immiscible with silicon but will wet silicon and has a melting point below that of silicon, and by drawing off a silicon film, sliding on this lubricating melt, and solidifying the silicon continuously by cooling to below its melting point.

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