中国物理B ›› 2015, Vol. 24 ›› Issue (11): 118101-118101.doi: 10.1088/1674-1056/24/11/118101
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
陈伟杰a b, 韩小标a b, 林佳利a b, 胡国亨a b, 柳铭岗a b, 杨亿斌a b, 陈杰a b, 吴志盛a b, 刘扬b, 张佰君a b
Chen Wei-Jie (陈伟杰)a b, Han Xiao-Biao (韩小标)a b, Lin Jia-Li (林佳利)a b, Hu Guo-Heng (胡国亨)a b, Liu Ming-Gang (柳铭岗)a b, Yang Yi-Bin (杨亿斌)a b, Chen Jie (陈杰)a b, Wu Zhi-Sheng (吴志盛)a b, Liu Yang (刘扬)b, Zhang Bai-Jun (张佰君)a b
摘要: Migration characterizations of Ga and In adatoms on the dielectric surface in selective metal organic vapor phase epitaxy (MOVPE) were investigated. In the typical MOVPE environment, the selectivity of growth is preserved for GaN, and the growth rate of GaN micro-pyramids is sensitive to the period of the patterned SiO2 mask. A surface migration induced model was adopted to figure out the effective migration length of Ga adatoms on the dielectric surface. Different from the growth of GaN, the selective area growth of InGaN on the patterned template would induce the deposition of InGaN polycrystalline particles on the patterned SiO2 mask with a long period. It was demonstrated with a scanning electron microscope and energy dispersive spectroscopy that the In adatoms exhibit a shorter migration length on the dielectric surface.
中图分类号: (III-V semiconductors)