1. School of Physical Science and Technology & Key Laboratory of Special Function Materials and Structure Design (MoE) & National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology Lanzhou University Lanzhou 730000 China
2. Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission Key Laboratory of Photosensitive Materials & Devices of Liaoning Province College of Physics and Materials Engineering Dalian Minzu University 18 Liaohe West Road Dalian 116600 China