Abstract

Nanorod and nanosphere ${{\rm Gd}_2}{{\rm O}_3}\!:\!{{\rm Tb}^{3 + }}$ particles were synthesized from chloride precursors ${{\rm GdCl}_3}$ and ${{\rm TbCl}_3}$ by NaOH addition in a diethylene glycol medium. The nanospheres and the nanorods of ${{\rm Gd}_2}{{\rm O}_3}\!:\!{{\rm Tb}^{3 + }}$ were tunably obtained by adjusting the addition speed of NaOH. The structure, morphologies, and the luminescence properties of nanorod and nanosphere ${{\rm Gd}_2}{{\rm O}_3}\!:\!{{\rm Tb}^{3 + }}$ were characterized by x-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy, and fluorescence spectrometry, respectively. The results confirmed that the structure of nanorod and nanosphere ${{\rm Gd}_2}{{\rm O}_3}\!:\!{{\rm Tb}^{3 + }}$ is cubic ${{\rm Gd}_2}{{\rm O}_3}$, and the luminescence of nanospheres is more intense than that of nanorods. The low cytotoxicity measured by the MTT method indicated the good biocompatibility of the samples.

© 2019 Optical Society of America

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