| abstract |
HVPE reactor for simultaneously fabricating multiple Group III nitride semiconductor structures during a single reactor run. The HVPE reactor includes a reactor chamber, a growth zone, a heating element and a gas supply system that can include a plurality of gas blocks. A substrate holder holds multiple substrates and can be a single or multi-level substrate holder. Gas flows from gas delivery blocks are independently controllable and are mixed to provide a substantially uniform gas environment within the growth zone. The substrate holder can be controlled, e.g., rotated and/or tilted, for uniform material growth. Multiple Group III nitride semiconductor structures can be grown on each substrate during a single fabrication run of the HVPE reactor. Growth on different substrates is substantially uniform and can be performed simultaneously on multiple larger area substrates, such as 3-12″ substrates. |