Affiliation: | Department of Physics, Hangzhou Dianzi University, Hangzhou {rm310018, China; Engineering Research Center for Nanotechnology, Nanchang University,Nanchang 330047, China;Institute of Modern Physics, Nanchang University, Nanchang 330031,China; Experimental Teaching Center, Guangdong University of Technology,Guangzhou 510006, China; Experimental Teaching Center, Guangdong University of Technology,Guangzhou 510006, China;Institute of Optoelectronic Material and Technology, South Chin |