1. Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, 230601 Hefei, China
2. Key Laboratory of Optoelectronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, 230601 Hefei, China
3. Laboratoire de Physicochimie de l’Atmospheŕe, Université du Littoral Côte d’Opale, 59140 Dunkerque, France