Comparative Thermoluminescence Study of Rare Earth (Eu3+,Dy3+) and Transition Metal Mn2+ with Aluminate Host

Abstract

The synthesis and characterization of Eu³⁺ Dy³⁺ and Mn²⁺ doped CaYAl₃O₇ phosphor with fixed 1 mol% concentrations  are reported herewith  to study the kinetic and  Thermoluminescence (TL) properties. The TL glow curve exhibit a  peak centered around ~350°C ,for all three dopants. The  Mn²⁺ ion  is exhibits intensive peak to other dopants. . Determine the activation energy and kinetic parameters of these material  using Chen’s formula. These results are supported by corresponding X-ray diffraction measurements which exhibit crystalline nature. These comparative analysis   suggest the possibility of utilizing this material in futuristic dosimeter application as well as in solid state lighting devices.

Keywords: Thermoluminescence ,Phosphor, Dosimeter