Epitaxial Core/Shell Nanocrystals of (Europium-Doped) Zirconia and Hafnia
Seno, Carlotta (University of Basel. Department of Chemistry)
Reichholf, Nico (University of Basel. Department of Chemistry)
Salutari, Francesco (Institut Català de Nanociència i Nanotecnologia)
Spadaro, Maria Chiara (Institut Català de Nanociència i Nanotecnologia)
Ivanov, Yurii P. (Istituto Italiano di Tecnologia)
Divitini, Giorgio (Istituto Italiano di Tecnologia)
Gogos, Alexander (Nanoparticle Systems Engineering Laboratory)
Herrmann, Inge K. (Nanoparticle Systems Engineering Laboratory)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Smet, Philippe F. (Ghent University. Department of Solid State Sciences)
De Roo, Jpnathan (University of Basel. Department of Chemistry)

Date:	2024
Abstract:	A careful design of the nanocrystal architecture can strongly enhance the nanocrystal function. So far, this strategy has faced a synthetic bottleneck in the case of refractory oxides. Here we demonstrate the epitaxial growth of hafnia shells onto zirconia cores and pure zirconia shells onto europium-doped zirconia cores. The core/shell structures are fully crystalline. Upon shelling, the optical properties of the europium dopant are dramatically improved (featuring a more uniform coordination and a longer photoluminescence lifetime), indicating the suppression of nonradiative pathways. These results launch the stable zirconium and hafnium oxide hosts as alternatives for the established NaYF systems.
Grants:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00457 Agencia Estatal de Investigación CEX2021-001214-S
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Journal of the American Chemical Society, Vol. 146, Issue 30 (July 2024) , p. 20550-20555, ISSN 1520-5126

DOI: 10.1021/jacs.4c05037
PMID: 39038812

6 p, 3.5 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles