1. Innovation Center for Gallium Oxide Semiconductor (IC-GAO), College of Integrated Circuit Science and Engineering, National and Local Joint Engineering Laboratory for RF Integration and Micro-Assembly Technologies, Nanjing University of Posts and Telecommunications (NJUPT), Jiangsu, Nanjing, China
2. College of Physics, MIIT Key Laboratory of Aerospace Information Materials and Physics, Key Laboratory for Intelligent Nano Materials and Devices, Nanjing University of Aeronautics and Astronautics, Jiangsu, Nanjing, China
3. Institute of Microscale Optoelectronics, Shenzhen University, Guangdong, Shenzhen, China
4. Department of Optoelectronic Information of Science and Engineering, School of Science, Jiangsu University of Science and Technology, Jiangsu, Zhenjiang, China