1. College of Physics, Guizhou Province Key Laboratory for Optoelectronic Technology and Application, Guizhou University, Guiyang 550025, China
2. College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
3. Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China