Patent ID: 7947577
Filing Date: 2011-05-24
Classification: C23C,C30B,H01L

Abstract:
1. A method of producing a group III nitride, comprising the step of reacting a group III halide gas with a nitrogen source gas in a growth chamber to grow a group III nitride on a substrate held in the growth chamber, wherein the method further comprises premixing together the group III halide gas and the nitrogen source gas before they are introduced into the growth chamber and introducing the mixed gas obtained in the premixing step into the growth chamber without forming a deposit in the mixed gas substantially, wherein, to introduce the mixed gas obtained in the premixing step into the growth chamber without forming a deposit in the gas substantially, mixing of the group III halide gas and the nitrogen source gas in the premixing step is carried out at a temperature T (° C.) ranging from a lower limit temperature specified by the following expression (1) to lower than 600° C. when the supply partial pressure of the group III halide gas to be supplied is represented by P (atm) and the obtained mixed gas is introduced into the growth chamber by keeping the temperature of the mixed gas at a range from the lower limit temperature specified by the expression (1) to lower than 600° C.: