Thermoluminescence kinetic parameters of yttrium niobate
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Abstract
Yttrium niobate (YNbO4) phosphorus produced using the solid-state technique by sintering at 1200 degrees 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 x 10(12) s(-1), 1.38 x 10(12) s(-1) and 0.98 x 10(12) s(-1), respectively. The results attained by all methods are discussed and compared.