Affiliation: | 1. Research Centre of Excellence for Organic Electronics, Hong Kong Baptist University, Hong Kong SAR, P. R. China;2. Department of Physics, Hong Kong Baptist University, Hong Kong SAR, P. R. China;3. Department of Chemistry and Institute of Creativity, Hong Kong Baptist University, Hong Kong SAR, P. R. China;4. Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research, Singapore, Singapore, Singapore;5. College of Materials Science and Engineering, Fujian Normal University, Fuzhou, P. R. China |