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Applied Physics A

, 125:793 | Cite as

Structural and spectral studies of MgZnO:Cr3+ nanophosphors prepared by combustion synthesis

  • Preasha Rajput
  • Pankaj Biswas
  • Vivek K. Singh
  • KamniEmail author
Article
  • 23 Downloads

Abstract

Nanocrystalline MgZn(1−x)O:xCr3+ powders with 0.25 ≤ x ≤ 3.0 mol% were synthesized using the combustion method. Crystallization of MgZn(1−x)O:xCr3+ was investigated using the X-ray diffraction (XRD) technique which point towards significant reduction in crystallite size for MgZnO samples with increasing Cr3+ concentration. Transmission electron microscopy revealed nanosized grains of the powder. UV–Vis spectroscopy and photoluminescence spectroscopy were employed to establish the electronic and optical properties of nanoparticles. Doping of Cr content from 0.25 to 3 mol% MgZnO facilitated tuning of bandgap in the range 3.37–3.43 eV. In addition to this, PL properties of the samples show that MgZn(1−x)O:xCr3+ possess emission peak at 589 nm. Under excitation at 325 nm, the material exhibits an orange emission with highest relative intensity achieved for 0.25 mol% Cr3+. This material may be explored as a new phosphor to be excited by UVA emitting AlGaN LEDs for optical devices and displays.

Notes

Acknowledgements

Dr. Kamni (corresponding author) is thankful to the Nano Research Laboratory at School of Physics, SMVDU for providing the research facilities to carry out this work.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Preasha Rajput
    • 1
  • Pankaj Biswas
    • 1
  • Vivek K. Singh
    • 1
  • Kamni
    • 1
    Email author
  1. 1.School of PhysicsShri Mata Vaishno Devi UniversityJammuIndia

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