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Issue 28, 2017
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Discovery of the Yb2+–Yb3+ couple as red-to-NIR persistent luminescence emitters in Yb-activated (Ba1−xSrx)AlSi5O2N7 phosphors

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Abstract

In this work we reported novel Yb-doped (Ba1−xSrx)AlSi5O2N7 phosphors showing intense persistent luminescence (PersL) in the visible and near-infrared (NIR) regions simultaneously. Both Yb2+ and Yb3+ were found to be PersL emitters, which presented a broad emission band centered at 664 nm and a sharp emission at 980 nm, respectively. The radiance of PersL in the Ba0.8Sr0.2AlSi5O2N7:Yb phosphor at 60 min after ceasing UV irradiation was 4.82 × 10−3 mW Sr−1 m−2, approximately one-third of the well-known ZnGa2O4:Cr3+ PersL phosphor. The results demonstrate that Yb could be a promising red-to-NIR PersL emitter and more Yb-activated phosphors could be developed for red-to-NIR PersL.

Graphical abstract: Discovery of the Yb2+–Yb3+ couple as red-to-NIR persistent luminescence emitters in Yb-activated (Ba1−xSrx)AlSi5O2N7 phosphors

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Publication details

The article was received on 12 Apr 2017, accepted on 22 Jun 2017 and first published on 22 Jun 2017


Article type: Paper
DOI: 10.1039/C7TC01600J
Citation: J. Mater. Chem. C, 2017,5, 7095-7101
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    Discovery of the Yb2+–Yb3+ couple as red-to-NIR persistent luminescence emitters in Yb-activated (Ba1−xSrx)AlSi5O2N7 phosphors

    Y. Lv, L. Wang, Y. Zhuang, T. Zhou and R. Xie, J. Mater. Chem. C, 2017, 5, 7095
    DOI: 10.1039/C7TC01600J

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