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Issue 45, 2018
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Columnar Gd2O3:Eu3+/Tb3+ phosphors: preparation, luminescence properties and growth mechanism

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Abstract

Columnar Gd2O3:Eu3+/Tb3+ phosphors were successfully prepared by a solvothermal method and subsequent calcination process. The structure, morphology and luminescence properties of the as-prepared products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence (PL) spectra. The XRD results indicate that the precursor sample is hexagonal Gd(OH)3 while the calcinated sample is cubic Gd2O3. SEM and TEM images show that both the precursor and the calcined samples are columnar, with lengths of 220 nm and 214 nm and diameters of 130 nm and 126 nm, respectively. The fluorescence spectrum shows that Gd2O3:Eu3+ generates a characteristic red emission when stimulated by ultraviolet light with a wavelength of 250 nm, which corresponds to the 5D07F2 transition of Eu3+. Gd2O3:Tb3+ generates a characteristic green emission when stimulated by ultraviolet light with a wavelength of 240 nm, which corresponds to the 5D47F5 transition of Tb3+.

Graphical abstract: Columnar Gd2O3:Eu3+/Tb3+ phosphors: preparation, luminescence properties and growth mechanism

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Publication details

The article was received on 27 Aug 2018, accepted on 20 Oct 2018 and first published on 22 Oct 2018


Article type: Paper
DOI: 10.1039/C8CE01441H
Citation: CrystEngComm, 2018,20, 7322-7328
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    Columnar Gd2O3:Eu3+/Tb3+ phosphors: preparation, luminescence properties and growth mechanism

    B. Qian, H. Zou, D. Meng, X. Zhou, Y. Song, K. Zheng, C. Miao and Y. Sheng, CrystEngComm, 2018, 20, 7322
    DOI: 10.1039/C8CE01441H

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