Liu Bo-Yang, Song Wen-Tao, Liu Zheng-Hui, Sun Xiao-Juan, Wang Kai-Ming, Wang Ya-Kun, Zhang Chun-Yu, Chen Ke-Bei, Xu Geng-Zhao, Xu Ke, Li Da-Bing. Characterization of phase separation on AlGaN surfaces by in-situ photoluminescence spectroscopy and high spatially resolved surface potential imagesJ. Acta Physica Sinica, 2020, 69(12): 127302. DOI: 10.7498/aps.69.20200099