Abstract
•The effect of heating rate on the glow curve of Ca3Y2B4O12:Dy was studied.•Kinetic parameters of Ca3Y2B4O12:Dy were determined by the glow curve deconvolution method.•The activation energy and the frequency factor were analysed using IR and VHR method.
In this study, thermoluminescence (TL) characteristics of Ca3Y2B4O12:xDy (0 ≤ x ≤ 0.07) phosphor samples were studied. The samples were exposed to beta irradiation in the dose range from 0.1 Gy to 100 Gy to investigate TL dose response. The concentration of Dy3+ in Ca3Y2B4O12 phosphor was optimized and found to be 1 mass % in terms of TL signal quality. The TL glow curve appears to be consisted of three peaks which were discernible at 72 °C, 280 °C and 376 °C. The trapping parameters (E, b, and s) were calculated using initial rise (IR), and variable heating rate (VHR) techniques. The trapping parameters, order of kinetics, frequency factor, and figure of merit have been all determined by means of the Glow Curve Deconvolution (GCD) method (tgcd:An R package). Ca3Y2B4O12:Dy phosphor displays efficient thermoluminescence properties.