Progress in research of GaN-based LEDs fabricated on SiC substrate<xref ref-type="fn" rid="cpb150103fn1">*</xref>

Progress in research of GaN-based LEDs fabricated on SiC substrate*

Xu Hua-Yong^a),^b), Chen Xiu-Fang^a), Peng Yan^a), Xu Ming-Sheng^a),^c), Shen Yan^a),^c), Hu Xiao-Bo^a)†, Xu Xian-Gang^a),^c)

Birefringence image of a micropipe observed by a polarizing optical microscope and the corresponding simulation image shown in the inset at the upper right.^{[ 20 ]}