SEED HOLDING MEMBER, POLYCRYSTALLINE SILICON PRODUCTION DEVICE, AND METHOD FOR PRODUCING SEED HOLDING MEMBER

WIPO Patent Application WO/2013/002254

A1

Provided are a seed holding member having a low electrical resistivity in the direction of current flow and exhibiting both an ability of holding a seed (seed rod) during operation and ease of breaking after operation, a polycrystalline silicon production device using the seed holding member, and a method for producing the seed holding member. A graphite-made seed holding member (6), which is attached to an electrode part (5) placed at the bottom of a furnace for producing polycrystalline silicon by Siemens method, and which holds the bottom end portion of a seed (4) serving as a seed rod, is formed of an extrusion material, and is configured such that the direction of extrusion of the extrusion material is substantially parallel with the seed (the axial direction (A) of the seed holding member (6) substantially coincides with the direction of extrusion). The bending strength of the seed holding member (6) is preferably 10-25 MPa, and more preferably 15-25 MPa.

WO/2014/166717	DEVICE AND METHOD FOR THE REMOVAL OF POLYCRYSTALLINE SILICON RODS FROM A REACTOR
WO/2005/123583	METHOD FOR PRODUCING POLYCRYSTALLINE SILICON AND POLYCRYSTALLINE SILICON FOR SOLAR CELL PRODUCED BY THE METHOD
JPS5173924	SHIRIKONKARANARU U GATATANTAI OYOBI SONOSEIZOHOHO

OKADA OSAMU (JP)

PCT/JP2012/066370

January 03, 2013

June 27, 2012

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TOYO TANSO CO (JP)
OKADA OSAMU (JP)

C01B33/035

JP2011051837A	2011-03-17
JP2011084410A	2011-04-28
JPH076866A	1995-01-10

KITADAI, Tetsuo et al. (JP)
Tetsuo Kitadai (JP)

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