1. Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province and Zhejiang Institute of Photoelectronics & Zhejiang Institute for Advanced Light Source, College of Physics and Electronic Information Engineering, Zhejiang Normal University, Jinhua 321004, P. R. China
2. Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, P. R. China
3. Xinjiang Key Laboratory of Solid State Physics and Devices, School of Physical Science and Technology, Xinjiang University, Urumqi 830046, P. R. China