Low Cost Rugged Upward Looking Infrared Ground Sensor for Stand Off Chemical Detection

Not Available ZnO has emerged as viable prospect for use as a substrate for GaN deposition. Various techniques have been applied to grow ZnO crystals, but the hyrothermal method has had the most success. Thermodynamic modeling is proposed as the approach to predicting suitable low temperature, phase pure synthesis of ZnO crystals. Epitaxial growth on seed crystals, obtained by flux growth, will be used to verify the predicted conditions for growth within the temperature range 150-300¿C. Results of synthesis experiments conducted at these mild conditions will be used in Phase I to determine linear growth rates on oriented ZnO seeds. This data will form the basis for crystal enlargement experiments in Phase II. The thermodynamic model developed in Phase I will be instrumental in growing p-type ZnO crystals in Phase II.