1. School of Information Engineering, Nanchang University, Nanchang 330031, Jiangxi, China
2. School of Physics and Materials Science, Nanchang University, Nanchang 330031, Jiangxi, China
3. Institute of Space Science and Technology, Nanchang University, Nanchang 330031, Jiangxi, China
4. College of Physics and Information Engineering, Institute of Micro-Nano Devices and Solar Cells, Fuzhou University, Fuzhou 350108, Fujian, China