[1] Hong Kong Univ Sci & Technol, Ctr Display Res, Kowloon, Hong Kong, Peoples R China
[2] Hong Kong Univ Sci & Technol, Dept Elect & Elect Engn, Kowloon, Hong Kong, Peoples R China
[3] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China