1. Institute of Photoelectronic Thin Film Devices and Technology Solar Energy Conversion Center Nankai University Tianjin 300350 China
2. Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Tianjin 300350 China
3. Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Tianjin 300350 China
4. Tianjin Key Laboratory of Molecular Optoelectronic Department of Chemistry Tianjin University Tianjin 300072 China
5. Frontiers Science Center for Flexible Electronics (FSCFE) MIIT Key Laboratory of Flexible Electronics (KLoFE) Shaanxi Institute of Flexible Electronics (SIFE) 8. Institute of Flexible Electronics (IFE) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China