1. The China-Germany Research Center for Photonic Materials and Devices
2. The State Key Laboratory of Luminescent Materials and Devices
3. School of Materials Science and Engineering
4. South China University of Technology
5. Guangzhou 510641
6. Otto Schott Institute of Materials Research
7. University of Jena
8. 07743 Jena
9. Germany
10. IRCP Chimie ParisTech
11. 75231 Paris Cedex 05
12. France