1. Faculty of Materials and Manufacturing, Beijing University of Technology, Key Laboratory of Advanced Functional Materials, Ministry of Education, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
2. Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
3. Center for Biomedical Optics and Photonics (CBOP) &, College of Physics and Optoelectronic Engineering Key Laboratory of Optoelectronic Devices and Systems Shenzhen University, Shenzhen 518060, P. R. China
4. Department of Physics, Jinnah College for Women, University of Peshawar, Peshawar, Pakistan