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Issue 26, 2017
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Extending the applications for lanthanide ions: efficient emitters in short-wave infrared persistent luminescence

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Abstract

Trivalent lanthanide ions (Ln3+) have been extensively used as emitters in short-wave infrared (SWIR; 900–1700 nm) photoluminescence for many advanced applications. Herein, we report that some Ln3+ ions can also act as efficient emitters for SWIR persistent luminescence. Using Ca2SnO4 as a host, we achieved strong SWIR persistent luminescence from a group of six Ln3+ ions, Nd3+, Pr3+, Yb3+, Ho3+, Tm3+ and Er3+, with the emission wavelengths tunable from ∼900 nm to ∼1550 nm. A direct relationship between the depth of electron traps and the ionic radii of Ln3+ ions was obtained. This study greatly expands the field of persistent luminescence in the SWIR spectral region, and the Ln3+ ion-activated Ca2SnO4 SWIR persistent phosphors are expected to have promising applications in a variety of areas such as biomedical imaging and night-vision surveillance.

Graphical abstract: Extending the applications for lanthanide ions: efficient emitters in short-wave infrared persistent luminescence

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Publication details

The article was received on 04 Apr 2017, accepted on 28 May 2017 and first published on 30 May 2017


Article type: Paper
DOI: 10.1039/C7TC01436H
Citation: J. Mater. Chem. C, 2017,5, 6488-6492
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    Extending the applications for lanthanide ions: efficient emitters in short-wave infrared persistent luminescence

    Y. Liang, F. Liu, Y. Chen, X. Wang, K. Sun and Z. Pan, J. Mater. Chem. C, 2017, 5, 6488
    DOI: 10.1039/C7TC01436H

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