1. State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering
2. Jilin University
3. Changchun 130012
4. China
5. Department of Chemistry and Physics
6. Louisiana State University
7. Shreveport
8. USA
9. Key Laboratory of Materials Physics of Ministry of Education Department of Physics and Engineering Zhengzhou University
10. Zhengzhou 450052