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Issue 47, 2015
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Power driven tunable white upconversion luminescence from Lu2TeO6 tri-doped with Yb3+, Tm3+ and Ho3+

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Abstract

Lu2TeO6 (LTO) doped with Yb3+, Tm3+ and Ho3+ ions has been synthesized by solid state reactions. Powder XRD and Rietveld refinement data confirmed that these compounds have a hexagonal structure with space group P321 (no. 150). The SEM images have shown the average size of the particles was smaller than 1 μm. Upconversion (UC) properties of the co-doped Yb,Tm:LTO and Yb,Ho:LTO as well as the tri-doped Yb,Tm,Ho:LTO were investigated under the excitation of a 976 nm laser diode. The blue, green, and red UC emissions were realized and successfully combined to yield white UC luminescence in the Yb,Tm,Ho:LTO system. The light color was studied in the framework of the 1931 CIE system. For the Yb,Tm,Ho:LTO, the UC light color can be continuously tuned in the white range by adjusting the pump power. The results have suggested that the Yb,Tm,Ho:LTO has potential as a phosphor for UC based white lighting and optoelectronic devices.

Graphical abstract: Power driven tunable white upconversion luminescence from Lu2TeO6 tri-doped with Yb3+, Tm3+ and Ho3+

  • This article is part of the themed collection: HOT articles
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Publication details

The article was received on 29 Aug 2015, accepted on 19 Oct 2015 and first published on 20 Oct 2015


Article type: Paper
DOI: 10.1039/C5CE01734C
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CrystEngComm, 2015,17, 9048-9054

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    Power driven tunable white upconversion luminescence from Lu2TeO6 tri-doped with Yb3+, Tm3+ and Ho3+

    J. F. Tang, G. N. Li, C. Yang, J. Gou, D. H. Luo and H. He, CrystEngComm, 2015, 17, 9048
    DOI: 10.1039/C5CE01734C

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