Modified Surface and Tuned Optical Band Gap of Polymer Nanocomposite Thin Films

Authors

  • Gurpreet Kaur Bhullar P.G. Department of Physics, Mata Gujri College, Fatehgarh Sahib 140 406, India
  • Gagandeep Chitkara University, Chandigarh-Patiala National Highway, Punjab 140 406, India
  • Seema Maheshwari P.G. Department of Chemistry, Mata Gujri College, Fatehgarh Sahib 140 406, India
  • Rishi Kumar Department of Physics, Guru Nanak College Budhlada Punjab 151 502, India
  • Ramneek Kaur P.G. Department of Physics, Mata Gujri College, Fatehgarh Sahib 140 406, India

DOI:

https://doi.org/10.56042/ijpap.v63i8.18625

Keywords:

Polyvinyl alcohol, Nanoparticles, Ultraviolet-Visible Spectroscopy, Photoluminescence Spectroscopy, Atomic Force Microscopy

Abstract

Thin films of nanocomposites, polyvinyl alcohol (PVA) dispersed with Zinc Oxide (ZnO) nanoparticles (nps) were deposited by solution casting method. Films were characterized for structural, optical, photoluminescent properties and topographical parameters. X-ray diffraction analysis confirmed the presence of ZnO, with improved crystallinity observed at higher ZnO concentrations. Ultraviolet-visible spectrum showed absorption at 289.00 nm for pure PVA and the addition of ZnO nanoparticles at 1 wt% and 5 wt% in the PVA matrix showed a shift in absorption peaks to 370.00 nm and 379.00 nm respectively. Photoluminescence spectroscopy showed strong emission peaks at 371 nm corresponding to near-band-edge. Atomic Force Microscopy ensured uniform dispersion of nanoparticles in the PVA matrix. 

Author Biographies

  • Gagandeep, Chitkara University, Chandigarh-Patiala National Highway, Punjab 140 406, India

    Working as a research scholar at Chikara University. Liquid crystals dispersed with  polymer material is the reserch topic.

  • Seema Maheshwari, P.G. Department of Chemistry, Mata Gujri College, Fatehgarh Sahib 140 406, India

    working as an assistant professor in chemistry department of Mata Gujri College, she is doing part time Ph.D. from Punjabi University Patiala.

  • Rishi Kumar, Department of Physics, Guru Nanak College Budhlada Punjab 151 502, India

    working as assistant professor in Physics. He was published many reserach papers in polymer dispersed liquid crystalline systems. https://scholar.google.co.in/citations?user=p3wtrr8AAAAJ&hl=en

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Published

2025-08-06

Issue

Vol. 63 No. 8 (2025): Indian Journal 0f Pure & Applied Physics

Section

Article

License

Copyright (c) 2025 Indian Journal of Pure & Applied Physics (IJPAP)

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Modified Surface and Tuned Optical Band Gap of Polymer Nanocomposite Thin Films . (2025). Indian Journal of Pure & Applied Physics (IJPAP), 63(8), 698-706. https://doi.org/10.56042/ijpap.v63i8.18625

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