1. College of Physics Changchun University of Science and Technology Changchun Jilin Province 130013 China
2. State Key Laboratory on Integrated Optoelectronics College of Electronic Science & Engineering Jilin University Changchun Jilin Province 130012 China
3. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal University Changchun Jilin Province 130103 China