Institution: | [1]Key Laboratory for Optoelectronic Technology and Systems of Education Ministry of China, College of Optoeleetronic Engineering, Chongqing University, Chongqing 400044, China [2]College of Chemistry and Chemical Engineering, Chongqing University~ Chongqing 400044, China [3]Department of Applied Physics, Chongqing University of Technology, Chongqing 400054, China |