Patent ID: 8430958

Claim:
A process for growing a crystalline gallium-containing nitride material using one or more seed racks, the process comprising: providing an autoclave or capsule comprising: a nutrient zone comprising a gallium-containing feedstock; a crystal growing zone comprising one or more seed racks, wherein the one or more seed racks comprise multiple bars and multiple tiers; and at least one seed crystal attached to the one or more seed racks in at least two positions; introducing a solvent capable of forming a supercritical fluid into at least one of the nutrient zone and the crystal growing zone; processing one or more portions of the gallium-containing feedstock in the supercritical fluid to provide a supercritical solution comprising at least one gallium containing species at a first temperature; and growing a crystalline gallium-containing nitride material from the supercritical solution on the seed crystal at a second temperature, the second temperature being characterized to cause the at least one gallium containing species to form the crystalline gallium-containing nitride material on the seed crystal.