Patent ID: 9269578
Filing Date: 2016-02-23
CPC Classification: C30B,H01L

Claim Text:
1. A method of forming an epitaxial layer on a substrate, the method comprising: decomposing an etching gas to form decomposed etching gases; supplying the decomposed etching gases and a source gas to an injecting unit in the reaction chamber after decomposing the etching gas to form the decomposed etching gases; heating the reaction chamber; applying a cooling gas to the injecting unit to cool the decomposed etching gases and the source gas in the injecting unit; decomposing the source gas to form decomposed source gases in the reaction chamber; applying the decomposed source gas in the reaction chamber to a substrate to form the epitaxial layer on the substrate; and etching a portion of the epitaxial layer on a specific region of the substrate using the decomposed etching gases in the reaction chamber.