1. Department of Physics
2. Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices
3. Jiujiang Research Institute
4. Xiamen University
5. Xiamen
6. Department of Electronic Science
7. P. R. China
8. School of Physics
9. Huazhong University of Science and Technology
10. Wuhan 430074
11. P.R. China