Enhanced red phosphorescence in nanosized CaTiO3:Pr3+ phosphors

Xianmin Zhang, Jiahua Zhang, Zhaogang Nie, Meiyuan Wang, Xinguang Ren, Xiao Jun Wang

    Research output: Contribution to journalArticlepeer-review

    65 Citations (Scopus)

    Abstract

    The red photoluminescence and phosphorescence originating from 1D2-3H4 transition of Pr 3+ in CaTiO3 nanoparticles are studied as a function of Pr3+ concentrations. The nanophosphors exhibit both longer persistence time of 30 min and higher quenching concentration of 0.4 mol % than the bulk (10 min and 0.1 mol %). The initial phosphorescence in the nanophosphor is an order of magnitude stronger than that in the bulk at the corresponding quenching concentrations. Phosphorescence decay patterns and diffused reflectance spectra before and after ultraviolet exposure indicate the existence of more traps contributing to phosphorescence in the nanoparticles.

    Original languageEnglish
    Article number151911
    JournalApplied Physics Letters
    Volume90
    Issue number15
    DOIs
    Publication statusPublished - 2007

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

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