Patent ID: 8846501
Filing Date: 2014-09-30
Classification: C23C,C30B

Abstract:
1. A method for equipping a process chamber in an apparatus for depositing at least one III-V semiconductor layer on a substrate held by a susceptor in the process chamber, process gases being introduced into the process chamber through a gas inlet element, in particular by means of a carrier gas, the process gases containing at least one organometallic compound of the Main Group III and a hydride of the Main Group V and decomposing into decomposition products in the process chamber, in particular on hot surfaces therein, the decomposition products comprising components that form the III-V semiconductor layer, the method characterized by selecting a material for a surface facing at least a wall of the process chamber that is opposite the susceptor, according to an optical reflectivity, optical absorptivity and optical transmissivity of said material, which reflectivity, absorptivity and transmissivity are the same as those of the layer to be deposited, and further selecting the material for the surface to be of a different material than the layer to be deposited.