1. Institute of Photoelectronic Thin Film Devices and Technology of Nankai University Tianjin 300350 P. R. China
2. Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Tianjin 300350 P. R. China
3. Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300350 P. R. China
4. Renewable Energy Conversion and Storage Center of Nankai University Tianjin 300072 P. R. China
5. Department of Electrical and Computer EngineeringUniversity of Toronto 35 St George Street Toronto Ontario M5S 1A4 Canada
6. Physical Sciences and Engineering Division (PSE)KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST) Thuwal 23955‐6900 Saudi Arabia
7. State Key Laboratory of Molecular Engineering of PolymersDepartment of Macromolecular Science and Laboratory of Advanced MaterialsFudan University Shanghai 200438 China
8. Beijing Synchrotron Radiation FacilityInstitute of High Energy PhysicsChinese Academy of Sciences Beijing 100049 China