R-plane Sapphire Substrate for Non-polar GaN Film
YANG Xin-Bo,XU Jun,LI Hong-Jun,BI Qun-Yu,CHENG Yan,SU Liang-Bi,ZHOU Guo-Qing
Journal of Inorganic Materials . 2009, (4): 783 -786 .  DOI: 10.3724/SP.J.1077.2009.00783