1. Department of Physics Siyuan Laboratory Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials Jinan University Guangzhou510632China
2. International Joint Laboratory of Renewable Energy Materials and Devices of Henan Province School of Physics & Electronics Henan University Kaifeng475004China
3. Shanghai Key Laboratory of Magnetic Resonance School of Physics and Electronic Science East China Normal University Shanghai200062China