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Issue 42, 2016
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Room-temperature green to orange color-tunable upconversion luminescence from Yb3+/Mn2+ co-doped CaO

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Abstract

Room-temperature green to orange color-tunable upconversion (UC) luminescence has been achieved from Yb3+/Mn2+ co-doped CaO by adjusting the doping concentration of Mn2+ ions and the temperature of the samples upon 980 nm laser diode excitation. In this material system, the green UC emission band centered at 508 nm and the wavelength-tunable orange UC emission band from 560 to 725 nm are realized at 980 nm excitation, which originate from the cooperative luminescence of Yb3+ pairs and the |2F7/2, 4T1(4G)〉 → |2F7/2, 6A1(S)〉 transition of exchange-coupled Yb3+–Mn2+ dimers, respectively. The characteristic Stokes and UC emission properties, UC luminescence decay behaviors, temperature-dependent UC emission properties, as well as the involved UC mechanism of CaO:Yb3+,Mn2+ are investigated and discussed in detail. This study offers a new method to design novel UC materials for lighting and display applications instead of using conventionally investigated lanthanide (Ln3+) ions, such as Er3+, Tm3+ and Ho3+.

Graphical abstract: Room-temperature green to orange color-tunable upconversion luminescence from Yb3+/Mn2+ co-doped CaO

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Publication details

The article was received on 04 Jul 2016, accepted on 02 Oct 2016 and first published on 03 Oct 2016


Article type: Paper
DOI: 10.1039/C6TC02773C
Citation: J. Mater. Chem. C, 2016,4, 10154-10160
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    Room-temperature green to orange color-tunable upconversion luminescence from Yb3+/Mn2+ co-doped CaO

    J. L. Wang, E. H. Song, M. Wu, W. B. Dai, X. F. Jiang, B. Zhou and Q. Y. Zhang, J. Mater. Chem. C, 2016, 4, 10154
    DOI: 10.1039/C6TC02773C

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