1. Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials
2. Jiangsu National Synergetic Innovation Center for Advanced Materials
3. Nanjing University of Posts & Telecommunications
4. Nanjing 210023
5. China
6. Frontiers Science Center for Flexible Electronics & Shaanxi Institute of Flexible Electronics
7. Northwestern Polytechnical University
8. Xi’an 710072