1. State
Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2. Department
of Applied Biology and Chemical Technology, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
3. Key
Laboratory of Functional Materials Physics and Chemistry of the Ministry
of Education, Jilin Normal University, Siping 136000, China