Affiliation: | a School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore b National Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China c College of Environment and Material Engineering, Yantai University, Yantai 264005, China d Research Facility for Advanced Materials, State Key Laboratory for Advanced Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China |