Up-conversion fluorescence and thermal optical bistability in Gd 2O3: 10% Yb3, 0.5% Tm3

Chunyan Cao, Xianmin Zhang, Minglun Chen, Weiping Qin, Jisen Zhang

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)


    Through a co-precipitation method Gd(OH)3: 0.5% Tm3, 10% Yb3 powder was synthesized. After sintering at different temperatures, the as-prepared Gd(OH)3: 0.5% Tm3, 10% Yb3 powder was changed into cubic and monoclinic phase Gd 2O3: 0.5% Tm3, 10% Yb3 phosphors. Crystalline phases and morphologies of as-prepared powder and phosphors were characterized by X-ray diffraction (XRD) and field emission scanning electron microscope (FE-SEM). Up-conversion (UC) fluorescence spectra of Gd 2O3: 0.5% Tm3, 10% Yb3 phosphors were recorded by a fluorescence spectrophotometer with a 980 nm continuous wave laser diode as the excitation source. Fluorescence decay behaviors of the phosphors were measured by exciting with 980 nm from an optical parametric oscillator (OPO) pumped by a pulsed Nd: YAG laser with a pulse duration of 10 ns and a repetition frequency of 10 Hz, and the signal was recorded using a monochromator and an oscillograph. Phase and excitation power dependent UC fluorescence properties of the phosphors were studied in detail in the article. Interestingly, the cubic phase phosphors presented thermal optical bistability phenomena. The fluorescence dynamic analysis indicated that rise and decay processes existed in the phosphor UC fluorescence.

    Original languageEnglish
    Pages (from-to)3685-3689
    Number of pages5
    JournalPhysica B: Condensed Matter
    Issue number17
    Publication statusPublished - 2010 Sep 1


    • 10% Yb
    • Excitation power
    • GdO: 0.5% Tm
    • Phase
    • Thermal optical bistability
    • Up-conversion fluorescence

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Electrical and Electronic Engineering


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