Ytterbium Doped Gadolinium Oxide (Gd₂O₃:Yb³⁺) Phosphor: Topology, Morphology, and Luminescence Behaviour

Abstract

Gd 2 O 3 :Yb 3+ phosphor has been synthesized by the solid state reaction method with boric acid used as a flux. The resulting Gd 2 O 3 :Yb 3+ phosphor was characterized by X-ray diffraction (XRD) technique, Fourier transmission infrared spectroscopy (FTIR), scanning electron microscope (SEM) and transmission electron microscope (TEM), and photoluminescence and thermoluminescence. The results of the XRD show that obtained Gd 2 O 3 :Yb 3+ phosphor has a cubic structure. The average crystallite sizes could be calculated as 42.9 nm, confirmed by the TEM results. The study suggested that Yb 3+ doped phosphors are potential luminescence material for IR laser diode pumping.