• Investigation of a thermoluminescence response and trapping parameters and theoretical model to explain concentration quenching for Yb³⁺-doped ZrO₂ phosphors under UV exposure

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      https://www.ias.ac.in/article/fulltext/boms/042/05/0249

    • Keywords

       

      Thermoluminescence signal; Yb3+-doped ZrO2; X-ray diffraction; scanning electron microscopy method; 3T1R model.

    • Abstract

       

      In this paper, a thermoluminescence signal centred at 129°C induced by UV radiation of Yb3+-doped ZrO2 is reported. Phosphor was prepared by a solution combustion method and annealed at 600 and 900°C to study the effect of annealing. The prepared phosphor was characterized by X-ray diffraction and scanning electron microscopy methods. Various parameters were optimized. Computerized glow curve deconvolution was employed and kinetic parameters for every deconvoluted peak were calculated. To understand the concentration quenching, a 3T1R (three trap one recombination centre) model has been proposed.

    • Author Affiliations

       

      KANCHAN UPADHYAY1 RAUNAK KUMAR TAMRAKAR2 ANUPAMA ASTHANA3

      1. International and Inter University Centre of Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam 686560, India
      2. Department of Applied Physics, Bhilai Institute of Technology (Seth Balkrishan Memorial), Near Bhilai House, Durg CG 491001, India
      3. Department of Chemistry, Govt. V Y T PG Autonomous College, Durg 491001, India
    • Dates

       
  • Bulletin of Materials Science | News

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