Method for making silicon rods

Details Method for making silicon rods Method for making silicon rods

C - Chemistry, Metallurgy

30

B

148/3.7

C30B 29/06 (2006.01) C04B 35/52 (2006.01) C30B 11/00 (2006.01) C30B 11/10 (2006.01)

Patent

CA 1155735

METHOD FOR MAKING SILICON RODS ABSTRACT To make solar energy competitive, as compared against other sources of energy, inexpensive solar cells are required. To accomplish this goal, a method is provided which enables one to produce silicon rods having a columnar structure made of monocrystalline zones with preferential crystallographic orientation. This is effected by feeding a silicon melt into a crystallization chamber having a vertically-movable,cooled bottom face,under the influence of a temperature gradient directed parallel to the rod axis, so that the rods can be made continuously or semicontinuously with high drawing speeds.

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