1. Institute of Advanced Materials
2. Key Laboratory for Organic Electronics & Information Displays (KLOEID)
3. Nanjing University of Posts and Telecommunications (NJUPT)
4. Nanjing 210023, China
5. Faculty of Engineering
6. Kyoto Sangyo University
7. Kyoto 603-8555, Japan
8. Jiangsu-Singapore Joint Research Center for Organic/Bio-Electronics & Information Displays and Institute of Advanced Materials
9. Nanjing Tech University