Affiliation: | [1]School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275; [2]State Key Laboratory of Optoelectronic Materials and Technologies, Guangzhou 510275; [3]Guangdong Provincial Key Laboratory of Photovoltaics Technologies, Guangzhou 510006; [4]School of Information Science and Technology, Sun Yat-Sen University, Guangzhou 510006 |