1. Key Laboratory of Optoelectronic Materials Chemistry and Physics Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices Fujian Institute of Research on the Structure of Matter Chinese Academy of Science Fuzhou 350002 P. R. China
2. University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100039 P. R. China
3. Fujian Luhai Engineering Investigation & Designing Company Fuzhou 350004 P. R. China