Patent ID: 8764903

Claim:
A hydride vapor phase epitaxy reactor for growing a group III-nitride crystalline material, comprising (a) a reactor body formed of a material compatible with reactants for growing the group III-nitride crystalline material; (b) a first gas inlet for introducing a first reactant comprising a halide gas; (c) a second gas inlet for introducing a second reactant comprising ammonia; (d) a stand in a first reactor zone in a chamber of the reactor body to hold a substrate upon which the group III-nitride crystalline material is grown; (e) a transition zone downstream of the stand; (f) a second reactor zone downstream of the transition zone; and (g) one or more heaters positioned and configured to heat the first reaction zone and the transition zone but not the second reactor zone chamber to a temperature above the precipitation temperature of ammonium halide, such that the ammonium halide precipitates in the second reactor zone during operation; and (h) wherein the reactor has a removable liner for growing polycrystalline group III-nitride material in and removing said polycrystalline group III-nitride material from the reactor.