METHOD OF PRODUCING SILICON FILAMENTS WITH ARBITRARY CROSS-SECTION (VERSIONS) Russian patent published in 2014 - IPC C30B13/20 C30B15/34 C30B29/06 C30B29/66 

FIELD: chemistry.

SUBSTANCE: one of the versions of producing silicon filaments in form of rods and/or substrates with an arbitrary cross-section from high-purity silicon involves continuous fusion casting of silicon downwards on a seeding agent through a draw plate situated between the melt zone and an inductor in an atmosphere of oxygen, cooling the obtained filament by immersion in a coolant, wherein seeding is carried out below the plane of the draw plate; the level of the coolant is set and kept near the crystallisation front, and the crystallisation front of silicon rods and/or substrates is held below the plane of the draw plate at a distance of 0.5-20 mm.

EFFECT: obtaining silicon filaments characterised by low electrical resistance, which are subject to heating when transmitting electric current at industrial frequency through said filaments from a low-voltage source, while maintaining a high rate of casting, as well as stable plastic and geometric characteristics of the finished product.

2 cl, 1 dwg