1. The China-Germany Research Center for Photonic Materials and Devices, The State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, School of Materials Science and Technology, South China University of Technology, Guangzhou 510640, P. R. China
2. Otto Schott Institute of Materials Research, University of Jena, Jena 07743, Germany
3. Guangdong Key Lab of Orthopedic Technology and Implant, Department of Orthopedics, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, P. R. China
4. Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, Norman, Oklahoma 73019, United States
5. School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, P. R. China