1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, Changchun 130012, Jilin, China
2. College of Science, Changchun University of Science and Technology, Changchun 130022, Jilin, China
3. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 136000, Jilin, China