1 Key Laboratory of Special Display Technology, Ministry of Education, National Engineering Laboratory of Special Display Technology, State Key Laboratory of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei 230009, China
2 Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
3 School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
4 Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, UK