ACIM Assisted Selective Depainting and Precision Cleaning of Delicate Surfaces

Not Available The primary goal of Phase I work will be to demonstrate the feasibility of growing high quality, high purity, stoichiometric ZnO bulk crystals from a seeded melt. The secondary goal will be to stabilize the ZnO, thereby improving the stability of the ZnO lattice in reducing atmospheres at high temperatures. Zinc oxide powder will be melted in Cermet¿s crystal growth apparatus in a pure oxygen environment. The crystals will be analyzed for crystalline perfection using x-ray rocking curves, and dislocation densities will be quantified using electron microscopy. High temperature stability will be investigated in GaN MOCVD and HVPE reactors. Lastly, GaN will be deposited on the crystals, and the films will be analyzed for perfection. This technique, matured in Phase II work, will provide BMDO with a high quality ZnO wafer source, with an ultimate volume price that is competitive with sapphire