1. Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo 315211, Zhejiang, P. R. China
2. The Research Institute of Advanced Technology, Ningbo University, Ningbo, 315211, China
3. XLIM Research Institute, CNRS/University of Limoges, Avenue Albert Thomas, 87060 Limoges, France