Abstract
Abstract This paper reports the thermoluminescence characteristics of Yb doped and Yb/RE 3+ (RE=Eu, Tb) codoped Y 2 O 3 phosphors under γ -irradiations. The phosphors were prepared by combustion synthesis method and characterized by X-ray diffraction (XRD) and Thermoluminescence (TL) techniques. XRD studies confirm the body-centered cubic structure of the phosphors. TL glow curves of doped and codoped phosphors exhibit single broad peak. Codoping with rare earth ions influences the glow peak temperature and intensity drastically. Intensity of the glow peak increases linearly in the studied γ -dose range. Kinetic parameters such as order of kinetics, trap depth and frequency factor associated with the glow peak were calculated by various glow curve methods.
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