1. State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University 422 Siming South Road, Siming District Xiamen Fujian 361005 P. R. China
2. School of Physics and Optoelectronic Engineering Yangtze University Jingzhou Hubei 434023 P. R. China
3. State Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
4. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information Fuzhou Fujian 350002 P. R. China