[1] City Univ Hong Kong, Ctr Super Diamond & Adv Films COSDAF, Hong Kong, Hong Kong, Peoples R China
[2] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China
[3] City Univ Hong Kong, Sch Energy & Environm, Hong Kong, Hong Kong, Peoples R China
[4] Chinese Acad Sci, Funct Thin Films Res Ctr, Shenzhen Inst Adv Technol, Beijing 100864, Peoples R China