1. State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 P. R. China
2. Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
3. Shenzhen Key Laboratory of Laser Engineering College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 P. R. China