[1] Harbin Inst Technol, Shenzhen Grad Sch, Res Ctr Adv Funct Mat & Devices, Shenzhen Key Lab Adv Mat,Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China
[2] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China
[3] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China