1. School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550025, China
2. School of Integrated Circuits, Guizhou Normal University, Guiyang 550025, China
3. School of Mathematical Sciences, Guizhou Normal University, Guiyang 550025, China
4. School of Electric and Electrical Engineering, Shangqiu Normal University, Shangqiu 476000, China
5. Material Science and Engineering Department, City University of Hong Kong, Hong Kong, 999077 China
6. School of Materials Science and Engineering, Chongqing University of Arts and Sciences, Chongqing 402160, China