METHOD FOR PRODUCING HIGH PURITY TRICHLOROSILANE FOR POLY-SILICON USING CHLORINE GAS OR HYDROGEN CHLORIDE

PURPOSE: A method for producing high purity trichlorosilane for poly-crystalline silicon using chlorine gas or hydrogen chloride is provided to cost-effective obtain the trichlorosilane using heat generated from chlorine reaction. CONSTITUTION: A method for producing high purity trichlorosilane incl...

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Hauptverfasser: KANG, KYUNG HOON, AHN, JUNG HO, KO, TAE HO, OH, DAN BI
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:PURPOSE: A method for producing high purity trichlorosilane for poly-crystalline silicon using chlorine gas or hydrogen chloride is provided to cost-effective obtain the trichlorosilane using heat generated from chlorine reaction. CONSTITUTION: A method for producing high purity trichlorosilane includes the following: Tetrachloride, metallic silicon, hydrogen, and chlorine or hydrochloride is reacted under catalyst. The reaction is implemented at temperature between 400 and 700 degrees Celsius. The pressure condition of the reaction is in a range between 1 and 40 bar. The catalyst is copper-based catalyst.