Patent ID: 6955719
Filing Date: 2005-10-18
Classification: C23C,C30B,H01L

Abstract:
1. A method of epitaxially growing a multi-layer device in a single epitaxial run utilizing HVPE techniques, the method comprising the steps of: locating a first Group III source within an HVPE reactor; locating a second Group III source within said HVPE reactor; heating said first Group III source to a first temperature; heating said second Group III source to a second temperature; heating a first growth zone of said HVPE reactor to a third temperature; heating a second growth zone of said HVPE reactor to a fourth temperature, wherein said first and second growth zones are different growth zones; locating a substrate within said first growth zone; reacting said first Group III source with a halide gas to form a first Group III reactant; reacting said second Group III source with said halide gas to form a second Group III reactant; transporting said first Group III reactant to said first growth zone; transporting a reaction gas to said first growth zone, said reaction gas containing nitrogen; reacting said first Group III reactant with said reaction gas to grow a first Group III nitride layer of a first thickness on said substrate; transferring said substrate to said second growth zone, wherein a temperature corresponding to said substrate varies by less than 200° C. during the transferring step; transporting said second Group III reactant to said second growth zone; transporting said reaction gas to said second growth zone; and reacting said second Group III reactant with said reaction gas to grow a second Group III nitride layer of a second thickness on said first Group III nitride layer substrate.