1. Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics Zhengzhou University Zhengzhou 450052 P. R. China
2. Center for Nanoscale Characterization and Devices (CNCD) School of Physics and Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology (HUST) Wuhan 430074 P. R. China
3. Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education Institutes of Physical Science and Information Technology Anhui University Hefei 230601 P. R. China
4. The Institute of Technological Sciences Wuhan University Wuhan 430072 P. R. China
5. Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal University Jinan 250358 P. R. China