Synthesis, Characterization and Comparative Luminescence Studies of Rare-Earth-Doped Gd₂O₃ Nanoparticles

A facile direct precipitation method was used for the synthesis of luminescence nanomaterial. Gd₂O₃ doped with rare earth element Eu³⁺ is synthesized by polyol route. The synthesized nanoparticles show their characteristic red emission. The nanoparticles are characterized by x-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and photoluminescence (PL) study. The synthesized nanoparticles are spherical particles with ~ 30 nm size. The photoluminescence studies show the characteristic Eu³⁺ red emission. The PL study shows the intensity of the magnetic dipole transition (${}^5{D}_0\to {}^7{F}_1$) at 592 nm compared to that of the electronic dipole transition (${}^5{D}_0\to {}^7{F}_2$) at 615 nm. The nanomaterials can show significant application in various display devices and biomedical applications for tracking.