**Abstract**

Luminescence behavior of the Gd2O3 phosphor is one of the important aspects in the technology of rare earth-based inorganic phosphor materials. The structural and optical behavior of a Gd2O3 nanophosphor will be discussed in detail. Structural characterization of the Gd2O3 was carried out via X-ray diffraction and electron microscopy methods. To detail the photoluminescence behavior, the excitation and emission spectra were recorded and discussed. Thermoluminescence (TL) study and kinetic analysis of the UV- and gamma-irradiated phosphor were also carried out to determine the use of the phosphor for the dosimetric application. Tunned glow peaks were deconvoluted by applying glow curve deconvolution function, and all the trapping parameters were determined.

**Keywords:** Gd2O3, combustion synthesis method, XRD, SEM, TEM, thermoluminescence, photoluminescence
