1. College of Electrical Engineering, Nanjing Vocational University of Industry Technology, Nanjing, China
2. Key Laboratory of Optoelectronic Devices and Systems of Education Ministry and Guangdong Province,College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
3. School of Automotive and Transportation Engineering, Shenzhen Polytechnic, BYD Institute of Applied Technology, Shenzhen, China