Thermoluminescence Properties of Ce, Dy Doped ZnB2O4 Phosphor

Abstract

Samples of Ce³⁺ and Dy³⁺ doped Zinc Borate (ZnB₂O₄) phosphors were synthesized using the solid-state reaction method. Structural characterization was performed using X-Ray Diffraction (XRD), surface morphology was analyzed by Field-Emission Scanning Electron Microscopy (FESEM), and elemental composition was determined via Energy Dispersive Spectroscopy (EDS). The XRD pattern of the synthesized sample closely matches the JCPDS 39-1126 reference. Thermoluminescence (TL) analysis revealed that the samples doped with 2 mol% Ce³⁺ and Dy³⁺ exhibit the highest TL intensity. Upon irradiation of both samples with varying Ultraviolet (UV) exposure times, the maximum TL intensity was observed with a 15-minute UV dose. Trapping parameters were calculated using Chen’s method, and the relationship between total TL intensity and UV dose, as well as the TL emission spectra, were also recorded.