1. Shenzhen Key Laboratory of Flexible Memory Materials and Devices, College of Physics and Optoelectronic Engineering, Shenzhen University
2. Shenzhen
3. China
4. Key Lab of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology
5. Taiyuan 030024
6. College of Physics and Optoelectronics, Taiyuan University of Technology
7. College of Materials Science and Engineering, Taiyuan University of Technology