1. Key Lab for Special Functional Materials Ministry of Education National & Local Joint Engineering Research Center for High‐efficiency Display and Lighting Technology School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications Henan University Kaifeng 475004 China
2. School of Materials Science and Engineering Henan Normal University Xinxiang 453007 China
3. Institute for Photovoltaics University of Stuttgart faffenwaldring 47 70569 Suttgart Germany
4. Helmholtz Young Investigator Group FRONTRUNNER IEK5‐Photovoltaik Forschungszentrum Jülich 52425 Jülich Germany