EQUIPMENT FOR HIGH VOLUME MANUFACTURE OF GROUP III-V SEMICONDUCTOR MATERIALS

摘要

The invention relates to methods and apparatus that are optimized for producing Group III-N (nitrogen) compound semiconductor wafers and specifically GaN wafers. Specifically, the methods relate to substantially preventing the formation of unwanted materials on an isolation valve fixture within a chemical vapor deposition (CVD) reactor. The invention provides apparatus and methods for limiting deposition/condensation of GaCl₃ and reaction by-products on an isolation valve that is used in the system and method for forming a monocrystalline Group III - V semiconductor material by reacting an amount of a gaseous Group III precursor as one reactant with an amount of a gaseous Group V component as another reactant in a reaction chamber.