1. Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences Haixi Research Institute, Xiamen, Fujian 361021, China
2. Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
3. Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen, Fujian 361021, China