1. School of Integrated Circuits, and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
2. China Zhenhua Group Yunke Electronics Co., Ltd., Guiyang 550018, China
3. School of Optical and Electronic Information, Key Lab of Functional Materials for Electronic Information (B), MOE, Huazhong University of Science and Technology, Wuhan 430074, China