[1] South China Normal Univ, Natl Ctr Int Res Green Optoelect, Guangzhou 510006, Guangdong, Peoples R China
[2] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[3] City Univ Hong Kong, Dept Mat Sci & Engn, Ctr Super Diamond & Adv Films COSDAF, 83 Tat Chee Ave, Hong Kong, Hong Kong, Peoples R China
[4] Nanyang Technol Univ, Sch Chem & Biomed Engn, 62 Nanyang Dr, Singapore, Singapore