Thermoluminescence kinetic parameters of yttrium niobate
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Date
2022
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Abstract
Yttrium niobate (YNbO4) phosphorus produced using the solid-state technique by sintering at 1200 °C investigated for thermoluminescence (TL) kinetics after irradiated with ultraviolet radiation (UV). The TL glow curve of UV irradiated yttrium niobate phosphorus recorded with a heating rate of 2 Ks−1 exhibited glow peaks at 366 and 424 K. The TL kinetic parameters belonging to main glow peak (424 K) of yttrium niobate phosphor, namely trap energy (E), frequency factor (s) and kinetic order (b) were investigated using Various Heating Rates (VHR), Computerized Glow Curve Deconvolution (CGCD), and Chen's Peak Shape (PS) methods after exposure to UV radiation. Trap energies of the phosphor by all methods were calculated as 1.09 eV. The frequency factors of the phosphor by CGCD, VHR and Chen's PS methods were obtained as 0.96 × 1012 s−1, 1.38 × 1012 s−1 and 0.98 × 1012 s−1, respectively. The results attained by all methods are discussed and compared. © 2022 Elsevier GmbH
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Keywords
Heating rate , Niobium compounds , Phosphors , Phosphorus , Sintering , Thermoluminescence , Ultraviolet radiation , Yttrium , Frequency factors , Glow curve , Glow curve deconvolution , Glow peaks , Kinetics parameter , Niobates , Peak shape methods , Solid state technique , Trap energy , Yttrium niobate , Kinetic parameters