1. Information Materials and Intelligent Sensing Laboratory of Anhui Province, Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, School of Physics and Optoelectronic Engineering, Anhui University, Hefei, 230601, Anhui, P. R. China
2. Institute of VLSI Design, Hefei University of Technology, Hefei 230601, China
3. Department of Polymeric Materials and Engineering, School of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu, 241000, Anhui, China