1. College of Mathematics and Physics, Beijing University of Chemical Technology, Beijing 100029, China
2. Research Center for Optoelectronic Materials and Devices, School of Physical Science and Technology, Guangxi University, Nanning 530004, China
3. School of Electronics and Information, Nantong University, Nantong 226019, China
4. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China