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- W2985784310 abstract "Abstract This paper reports for the first time the luminescence (both thermo and photoluminescence) properties of a new phosphor KCaPO4:Dy. The crystallite size of the phosphor prepared by solid-state diffusion method varied from approximately 46 nm–53 nm on varying the concentration of the dopant from 0.1 mol% to 0.4 mol%. Dopant concentration dependent bandgap mechanics in the phosphor was used to explain the behaviour of thermoluminescence (TL) glow curves obtained from gamma and ultraviolet irradiation, and photoluminescence (PL) spectra of the phosphor. Further, this phosphor shows good TL sensitivity towards gamma rays (2.5 times more sensitive than standard TL material TLD-100) and UV rays (20 times more intense than TLD-100). Moreover, the given phosphor shows good linear dose response for gamma rays (with linearity ranging from 10 Gy to 2 kGy) and UV irradiation. Deconvolution was also performed on the glow curves of the given phosphor for gamma irradiation (10 Gy) and UV irradiation (60 min) in order to calculate kinetic parameters for the traps. Other characteristics of the TL material i.e. repeatability and fading were also studied for this phosphor. Decent PL properties with an overall emission lying very near to the white region was observed through the chromaticity index of Commission Internationale de l’E’ clairage (CIE). All these characteristics make the phosphor (with 0.3 mol% Dy concentration) a potential candidate for radiation dosimeter and a UV convertible material for white-light-emitting diodes." @default.
- W2985784310 created "2019-11-22" @default.
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- W2985784310 date "2020-03-01" @default.
- W2985784310 modified "2023-10-06" @default.
- W2985784310 title "Effect of dopant concentration on luminescence properties of a phosphor KCaPO4: Dy" @default.
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- W2985784310 doi "https://doi.org/10.1016/j.radphyschem.2019.108561" @default.
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