1. Center for Advanced Optoelectronic Functional Materials Research and Key Laboratory of UV‐Emitting Materials and Technology of Ministry of EducationNortheast Normal University 5268 Renmin Street Changchun 130024 China
2. Department of Information Science and TechnologyQingdao University of Science and Technology No. 99 Songling Road Qingdao 266061 China
3. School of Physics and MicroelectronicsZhengzhou University 100 Science Avenue Zhengzhou 450052 China