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Issue 47, 2016
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Near-infrared long persistent luminescence of Er3+ in garnet for the third bio-imaging window

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Abstract

By utilizing efficient persistent energy transfer from Ce3+ to Er3+, we have successfully developed a novel garnet persistent phosphor of Y3Al2Ga3O12 doped with Er3+, Ce3+, Cr3+ ions (YAGG:Er–Ce–Cr) exhibiting long (>10 h) near-infrared (NIR) persistent luminescence (PersL) in the broad range from 1450 nm to 1670 nm due to the typical Er3+:4I13/24I15/2 transition in garnet. The NIR PersL bands of Er3+ match well with the third bio-imaging window (NIR-III, approximately from 1500 nm to 1800 nm) and the response curve of InGaAs detectors. The photon emission rate (8.33 × 1017 cps Sr−1 m−2) of the YAGG:Er–Ce–Cr persistent phosphor at 10 min after ceasing blue light illumination was over two times higher than that of the widely used ZnGa2O4:Cr3+ deep-red persistent phosphor (3.30 × 1017 cps Sr−1 m−2). We also show the first PersL imaging by a commercial InGaAs camera monitoring Er3+ emission indicating that this material can be a promising candidate for in vivo bio-imaging in the NIR-III window.

Graphical abstract: Near-infrared long persistent luminescence of Er3+ in garnet for the third bio-imaging window

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Publication details

The article was received on 15 Sep 2016, accepted on 02 Nov 2016 and first published on 02 Nov 2016


Article type: Paper
DOI: 10.1039/C6TC04027F
Citation: J. Mater. Chem. C, 2016,4, 11096-11103
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    Near-infrared long persistent luminescence of Er3+ in garnet for the third bio-imaging window

    J. Xu, D. Murata, J. Ueda and S. Tanabe, J. Mater. Chem. C, 2016, 4, 11096
    DOI: 10.1039/C6TC04027F

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