1. Center for Programmable Materials School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
2. Department of Chemistry City University of Hong Kong Hong Kong China
3. School of Physics Southeast University Nanjing 211189 China
4. Department of Electrical Engineering City University of Hong Kong Hong Kong China
5. Shenzhen Research Institute City University of Hong Kong Shenzhen 518057 China
6. Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM) City University of Hong Kong Hong Kong China
7. Institute of Flexible Electronics (IFE) Northwestern Polytechnical University (NPU) Xi'an 710000 China
8. Department of Chemistry The Chinese University of Hong Kong Shatin, N.T. Hong Kong China
9. Key Laboratory for Special Functional Materials of Ministry of Education School of Materials Henan University Kaifeng 475004 China