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Optical behavior and TL kinetics of Eu3+ and Tb3+ doped zirconate thermoluminescent phosphors

  • Shambhavi Katyayan
  • Sadhana AgrawalEmail author
Article
  • 12 Downloads

Abstract

The influence of Tb3+ and Eu3+ ions on the optical behavior and TL kinetics of the synthesized phosphors were analyzed here. The AZrO3 (A = Ca, Ba, Sr) phosphors activated with Eu3+ and Tb3+ ions were prepared using solid state reaction technique. The doping concentration of Eu3+ and Tb3+ ions is varied from 0 to 2 mol% for each. The PXRD analysis is done to study various crystallographic aspects of synthesized phosphors. It confirms the crystalline structure, phase purity and homogeneity of synthesized phosphors. The FESEM and TEM analyses show formation of particles with irregular shape and variable dimensions. The agglomeration of these particles is a resultant of prolonged heat treatments involved in solid state reaction method at elevated temperatures. The study of TL spectra of UV and gamma irradiated phosphors set forth their second order kinetics. The electrons were trapped in trap centers with high trap depth and hence high amount of energy (~ 3 eV) is required to vacate them. The doping of trivalent rare earth impurity ions in the perovskite host lattice leads to formation of these traps centers. With enhanced TL intensity and low fading characteristics, these phosphors are suitable alternatives for TL mapping and sensing applications.

Keywords

Perovskites Thermoluminscence Trap depth Activation energy Order of kinetics 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of PhysicsNational Institute of Technology RaipurRaipurIndia

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