1. Artificial Crystal Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
2. Key Laboratory of Optoelectronic Material and Device, Department of Physics, Shanghai Normal University, Shanghai 200234, China
3. Scintillation Materials Research Center, University of Tennessee, Knoxville, Tennessee 37996, United States
4. Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States