1. State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University 2699 Qianjin Street Changchun 130012 P. R. China
2. Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM)Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)Nanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 P. R. China
3. Institute of Flexible ElectronicsNorthwestern Polytechnical University Xi'an 710129 P. R. China