1. Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, People’s Republic of China
2. Department of Material Science and Technology, Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, 1 Jinji Road, 541004 Guilin, Guangxi, People’s Republic of China
3. College of Physics and Electronic Engineering, Taishan University, Taian 271021, People’s Republic of China