1. Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, 100044 Beijing, People’s Republic of China
2. College of Physics and Electronic Engineering, Taishan University, 271021 Taian, Shandong Province, People’s Republic of China
3. College of Physics and Electronic Engineering, Chongqing Normal University, 401331 Chongqing, People’s Republic of China