Modulation of optical and photoluminescence properties of ZnO thin films by Mg dopant

Anushree Jogi, A. Ayana, B. V. Rajendra

Research output: Contribution to journalArticlepeer-review


Nanostructured Zn1−xMgxO (x = 0–0.04) thin films were deposited on a glass substrate through the sol–gel dip coating. X-ray diffraction indicates the films exhibited a hexagonal wurtzite structure with maximum intensity at (1 0 1) plane. The intensity of the diffraction peak decreased with increasing the Mg doping concentration. The crystallite size varied as a function of the increase in Mg doping concentration. The deposits showed a nanograin structure for pure ZnO, which changes in the presence of Mg content, and elemental composition was confirmed by using energy-dispersive spectra. Optical analysis showed a significant increase in transmittance from 80 to 90% in the visible range and a decrement in the optical bandgap energy from 3.305 to 3.261 eV with an increase in Mg doping. Photoluminescence spectra showed there was a quenching of near band edge emission with doping concentration and a red emission for Zn0.96Mg0.04O film. The color coordinates of the deposits were in the nearly white light region, showing the maximal white light emission.

Original languageEnglish
Article number624
JournalJournal of Materials Science: Materials in Electronics
Issue number7
Publication statusPublished - 03-2023

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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