1. State Key Laboratory of Luminescence and Application
2. Changchun Institute of Optics
3. Fine Mechanics and Physics
4. Chinese Academy of Science
5. Changchun 130033, P. R. China
6. Department of Biomedical Engineering and Physics
7. Academic Medical Center
8. University of Amsterdam
9. 1105 AZ Amsterdam, P.O. Box 22700, The Netherlands
10. Van't Hoff Institute for Molecular Sciences
11. 1098 XH Amsterdam, The Netherlands
12. Centre for Advanced Optoelectronic Functional Materials Research
13. Key Laboratory for UV Light-Emitting Materials and Technology of the Ministry of Education
14. Northeast Normal University
15. Changchun 130024, P. R. China