1. Shaanxi Institute of Flexible Electronics (SIFE) Northwestern Polytechnical University (NPU) Xi'an 710129 China
2. Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
3. State Key Laboratory of ASIC and System School of Information Science and Technology Fudan University Shanghai 200433 China
4. Key Laboratory of Flexible Electronics and Institute of Advanced Materials National Jiangsu Synergetic Innovation Centre for Advanced Materials Nanjing Tech University Nanjing 211816 China
5. School of Physics and Technology Wuhan University Wuhan 430072 China