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Materials 2013, 6(7), 2789-2818; https://doi.org/10.3390/ma6072789

Persistent Luminescence in Non-Eu2+-Doped Compounds: A Review

1
LumiLab, Department of Solid State Sciences, Ghent University, Krijgslaan 281-S1, 9000 Gent, Belgium
2
Center for Nano- and Biophotonics (NB-Photonics), Ghent University, 9000 Ghent, Belgium
*
Author to whom correspondence should be addressed.
Received: 20 May 2013 / Revised: 18 June 2013 / Accepted: 3 July 2013 / Published: 12 July 2013
(This article belongs to the Special Issue Luminescent Materials 2013)
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Abstract

During the past few decades, the research on persistent luminescent materials has focused mainly on Eu2+-doped compounds. However, the yearly number of publications on non-Eu2+-based materials has also increased steadily. By now, the number of known persistent phosphors has increased to over 200, of which over 80% are not based on Eu2+, but rather, on intrinsic host defects, transition metals (manganese, chromium, copper, etc.) or trivalent rare earths (cerium, terbium, dysprosium, etc.). In this review, we present an overview of these non-Eu2+-based persistent luminescent materials and their afterglow properties. We also take a closer look at some remaining challenges, such as the excitability with visible light and the possibility of energy transfer between multiple luminescent centers. Finally, we summarize the necessary elements for a complete description of a persistent luminescent material, in order to allow a more objective comparison of these phosphors. View Full-Text
Keywords: persistent luminescence; long-lasting phosphorescence; rare earths persistent luminescence; long-lasting phosphorescence; rare earths
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Van den Eeckhout, K.; Poelman, D.; Smet, P.F. Persistent Luminescence in Non-Eu2+-Doped Compounds: A Review. Materials 2013, 6, 2789-2818.

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