1. Institute of New Energy Technology, College of Information Science and Technology, Jinan University, Guangzhou510632, China
2. Key Laboratory of New Semiconductors and Devices of Guangdong Higher Education Institutes, Jinan University, Guangzhou510632, China
3. National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices, College of Physics Science and Technology, Institute of Life Science and Green Development, Hebei University, Baoding071002, China