1. Department of Materials Science and Engineering National Taiwan University of Science and Technology Taipei City 106335 Taiwan
2. Department of Physics Udit Narayan Post Graduate College Padrauna Kushinagar Uttar Pradesh 274304 India
3. Department of Molecular Science and Engineering Institute of Organic and Polymeric Materials National Taipei University of Technology Taipei City 106344 Taiwan
4. Institute and Undergraduate Program of Electro‐Optical Engineering National Taiwan Normal University Taipei City 11677 Taiwan
5. Department of Materials Science and Engineering National Taiwan University Taipei City 106319 Taiwan