Patent ID: 7329554

Claim:
A method of producing a GaAlInP compound semiconductor, the method comprising the steps of: disposing a GaAs single crystal as a substrate in a metal organic chemical vapor deposition (MOCVD) reactor; preparing Al, Ga, In vapors by thermally decomposing organometallic compounds of Al, Ga, and In; preparing Zn vapors by thermally decomposing an organometallic Zn compound; preparing P vapors by thermally decomposing phosphine gas; simultaneously supplying the Al, Ga, In, P, Se, and Zn vapors to a region for epitaxial crystal growth on the substrate; and epitaxially growing a GaAlInP crystal doped with Zn and Se on the substrate; wherein flow rates of the Zn and Se vapors supplied to the region for epitaxial crystal growth are controlled to produce a heavily doped GaAlInP compound semiconductor with Zn serving as a p-type dopant at an atomic ratio of Zn:Se greater than two in the GaAlInP crystal.