1. School of Energy and Environment, Department of Materials Science and Engineering, Centre for Functional Photonics (CFP), City University of Hong Kong, Kowloon Tong, Hong Kong, China
2. Shenzhen Research Institute of City University of Hong Kong, Shenzhen 518057, P. R. China
3. Faculty of Materials Science and Chemistry, China University of Geosciences (Wuhan), Wuhan 430074, China
4. Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01224, Warsaw, Poland
5. Engineering Research Institute (In3), Universidad Cooperativa de Colombia, Medellín 50031, Colombia
6. Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong, China
7. Department of Physics, Department of Materials Science and Engineering, Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China