1. Institute of New Energy Technology, College of Physics and Optoelectronic Engineering, Jinan University, Guangzhou 510632, China
2. Guangzhou Beihuan Intelligent Transportation Technology Co., Ltd., Guangzhou, Guangdong 510030, China
3. Key Laboratory of New Semiconductors and Devices of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China