1. School of Physic Henan Normal University Henan Key Laboratory of Photovoltaic Materials Xinxiang 453007 China
2. Key Lab for Special Functional Materials of 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
3. Department of Chemistry Nankai University Tianjin 300071 China