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Manipulating trap filling of persistent phosphors upon illumination by using a blue light-emitting diode

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Abstract

Developing a conceptual “write”/“read” technology for optical information storage of persistent phosphors is necessary but often underestimated. Here we demonstrate a “write”/“read” approach of traps upon illumination by using a blue light-emitting diode (LED) in persistent phosphors such as LaMgGa11O19:Cr3+. Our investigation indicates that the phosphor can be charged upon high-power illumination (e.g., incident power density of 0.5 W cm−2) but discharged upon low-power illumination (e.g., 0.1 W cm−2). An appealing feature of the present approach is that the charging and discharging share the same illumination wavelength, which offers an interesting technical advantage and apparent convenience for applications. Moreover, such a manipulation technique is generally applicable for many existing phosphors.

Graphical abstract: Manipulating trap filling of persistent phosphors upon illumination by using a blue light-emitting diode

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Article information


Submitted
20 Mar 2020
Accepted
16 Apr 2020
First published
16 Apr 2020

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

Manipulating trap filling of persistent phosphors upon illumination by using a blue light-emitting diode

Q. Gao, C. Li, Y. Liu, J. Zhang, X. Wang and F. Liu, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/D0TC01427C

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