1. Key Laboratory 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
2. International Laboratory for Quantum Functional Materials of Henan and School of Physics, Zhengzhou University, Zhengzhou 450001, China