Project supported by the National Natural Science Foundation of China (Grant Nos 60506001,60776047,60476021,60576003 and 60836003);the National Basic Research Programme of China (Grant No 2007CB936700)
A violet laser diode (LD) structure is grown on a free-standing c-plane GaN substrate and 4 μm×800μm ridge waveguide LDs are fabricated. The electrical and the optical characteristics of LDs under different facet...
Project supported by the National Natural Science Foundation of China (Grant Nos 60506001, 60476021, 60576003, 60776047 and 60836003);the National Basic Research Program of China (Grant No 2007CB936700);Project of Technological Research and Development of Hebei Province (Grant No 07215134)
High-quality and nearly crack-free GaN epitaxial layer was obtained by inserting a single A1GaN interlayer between GaN epilayer and high-temperature AlN buffer layer on Si (111) substrate by metalorganic chemical va...