1. National‐Local Joint Engineering Laboratory of New Energy Photoelectric Devices Hebei Key Laboratory of Optic‐Electronic Information and Materials College of Physics Science & Technology Hebei University Baoding 071002 China
2. Department of Materials Science and Engineering City University of Hong Kong Kowloon Hong Kong 999077 China
3. College of Physics and Optoelectronic Technology Baoji University of Arts and Sciences Baoji 721016 China
4. College of Automotive & Electronic Engineering Baoding University Baoding 071002 China