1. School of Materials and Energy University of Electronic Science and Technology of China Chengdu 610054 P. R. China
2. Research Centre for Information Technology Shenzhen Institute of Information Technology Shenzhen 518172 P. R. China
3. Institute of Flexible Electronics Technology of THU Jiaxing 314000 P. R. China
4. Laboratory of Flexible Electronics Technology Tsinghua University Beijing 100084 P.R. China
5. State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu 610054 P. R. China
6. Medico‐Engineering Cooperation on Applied Medicine Research Center University of Electronic Science and Technology of China Chengdu 610054 P. R. China