2024-03-29T06:10:05Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1894382021-12-27T16:42:48Zcom_10261_89com_10261_3com_10261_78col_10261_342col_10261_331
Precise tuning of the nanostructured surface leading to the luminescence enhancement in SrAl2 O4 based core/shell structure
Rojas-Hernández, Rocío E.
Rubio Marcos, Fernando
Serrano Rubio, Aída
Campo, Ángel Adolfo del
Fernández Lozano, José Francisco
Ministerio de Economía y Competitividad (España)
European Commission
Intensive research has been focused on the synthesis of long-lasting SrAl2O4:EuDy in luminescent materials field. Traditionally, SrAlO:EuDy is synthesized in bulk form by solid state. However, their development remains restrained due to this technique is not compatible with large-scale production, sustainability and nanometer-scale requirements. Despite nano-range particles have been obtained by chemical routes, photoluminescence response decreases and application became unpractical. It remains a challenge to synthesize nonrare-earth (RE) phosphors with high photoluminescence. One major challenge for the luminescent materials community is to devise methods to deliver innovative, sustainable and cost effective solutions for the reduction of RE because of the lack of RE availability. Here, we suggest a solution based on molten salts, obtaining nanosheets or micro/nanostructured SrAlO:Eu, Dy particles with core-shell structure, employing only 50% of standard amounts of RE. Core-size and shell thickness and crystallinity can be tuned by post-thermal treatment, through which can be modulated the Eu+2 fraction. We find that our methodology leads the functional features of the analogous micron counterpart. These results can be considered a great achievement to scale-up the process. Besides, the harmful collateral effect of nanotechnology must be addressed by using new safe by design core-shell nanostructures.
The authors express their thanks to the MINECO (Spain) project MAT2013-480089-C04-1-P for their financial support. F.R.-M. is also indebted to MINECO for a “Juan de la Cierva” contract (ref: JCI-2012-14521), which is co-financed with European Social Fund.
2019-08-29T11:30:07Z
2019-08-29T11:30:07Z
2017-03-28
2019-08-29T11:30:07Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1038/s41598-017-00541-w
e-issn: 2045-2322
Scientific Reports 7: 462 (2017)
http://hdl.handle.net/10261/189438
10.1038/s41598-017-00541-w
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003329
28352090
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MAT2013-480089-C04-1-P
Publisher's version
https://doi.org/10.1038/s41598-017-00541-w
Sí
open
Springer Nature