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Nanomaterials 2018, 8(4), 260; https://doi.org/10.3390/nano8040260

Efficient Blue to Red Afterglow Tuning in a Binary Nanocomposite Plastic Film

1
Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, China
2
Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA
*
Author to whom correspondence should be addressed.
Received: 13 March 2018 / Revised: 16 April 2018 / Accepted: 16 April 2018 / Published: 20 April 2018
(This article belongs to the Special Issue Nanosized Luminescent Materials: Advances and Applications)
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Abstract

Colorful spectra are important for the diverse applications of persistent phosphors. A color conversion concept is developed to obtain abundant persistent luminescence color by mining capacities of known persistent phosphors with the most efficient persistent properties. Here, SiO2/Sr2MgSi2O7:Eu,Dy nanoparticles are chosen as a blue persistent luminescence donor nanophosphor, while ultrafine CaAlSiN3:Eu is utilized as a red conversion phosphor to tune the persistent luminescence spectra from blue to red. The red afterglow emission can persist for more than 5 h. The decay of the red afterglow follows nearly the same kinetics as that of the blue one. Continuous color tuning can be successfully obtained by simply changing the mass ratio of the donor/conversion phosphor pair. This color conversion strategy may be significant in indicating numerous persistent/conversion nanocomposites or nanostructures and advance the development of persistent phosphors in diverse fields which need colorful spectral properties. View Full-Text
Keywords: persistent luminescence; afterglow; spectral tuning; nanophosphor; nanocomposite persistent luminescence; afterglow; spectral tuning; nanophosphor; nanocomposite
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Xia, Y.; Ou, H.; Li, W.; Han, G.; Li, Z. Efficient Blue to Red Afterglow Tuning in a Binary Nanocomposite Plastic Film. Nanomaterials 2018, 8, 260.

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