1. State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun 130012, China
2. Department of Chemistry and Physics, Louisiana State University, Shreveport, Louisiana 71115, United States
3. Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
4. China-Japan Union Hospital, Jilin University, Changchun 130012, China