1. Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa 999078, Macau, China
2. Institute of Semiconductor Science and Technology, South China Normal University, Guangzhou 510631, China
3. SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd., Qingyuan 511517, China