Patent ID: 9263261
Filing Date: 2016-02-16
CPC Classification: C01B,C23C,H01L

Claim Text:
1. A method of supplying a source gas to a reaction furnace for producing polycrystalline silicon with a Siemens method, the method comprising: using a reaction furnace in which one or more source gas supply nozzles are disposed such that a flow pattern of the source gas in the reaction furnace is an ascending current in a reaction furnace center portion and is a descending current in a reaction furnace outer wall side portion; and setting, in performing deposition reaction of the polycrystalline silicon under a reaction pressure of 0.25 MPa to 0.9 MPa, when flow velocity of the source gas in gas supply ports of the source gas supply nozzles is represented as u (m/sec), a source gas supply amount is represented as Q (kg/sec), and an inner volume of the reaction furnace is represented as V (m