[1] Beijing Jiaotong Univ, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
[2] Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Dept Mat Sci & Technol, Guilin 541004, Peoples R China
[3] Nanjing Univ Sci & Technol, Minist Educ, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China