Investigation on the Luminescence Properties of InMO4 (M = V5+, Nb5+, Ta5+) Crystals Doped with Tb3+ or Yb3+ Rare Earth Ions

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Show simple item record Botella, Pablo Enrichi, Francesco Vomiero, Alberto Muñoz Santiuste, Juan Enrique Garg, Alka B. Arvind, Ananthanarayanan Manjon, Francisco J. Segura, Alfredo Errandonea, Daniel 2022-08-05T08:39:14Z 2022-08-05T08:39:14Z 2020-01-30
dc.identifier.bibliographicCitation Botella, P., Enrichi, F., Vomiero, A., Muñoz-Santiuste, J. E., Garg, A. B., Arvind, A., Manjón, F. J., Segura, A., & Errandonea, D. (2020). Investigation on the Luminescence Properties of InMO4 (M = V5+, Nb5+, Ta5+) Crystals Doped with Tb3+ or Yb3+ Rare Earth Ions. In ACS Omega (Vol. 5, Issue 5, pp. 2148–2158). American Chemical Society (ACS).
dc.identifier.issn 2470-1343
dc.description.abstract We explore the potential of Tb- and Yb-doped InVO4, InTaO4, and InNbO4 for applications as phosphors for light-emitting sources. Doping below 0.2% barely change the crystal structure and Raman spectrum but provide optical excitation and emission properties in the visible and near-infrared (NIR) spectral regions. From optical measurements, the energy of the first/second direct band gaps was determined to be 3.7/4.1 eV in InVO4, 4.7/5.3 in InNbO4, and 5.6/6.1 eV in InTaO4. In the last two cases, these band gaps are larger than the fundamental band gap (being indirect gap materials), while for InVO4, a direct band gap semiconductor, the fundamental band gap is at 3.7 eV. As a consequence, this material shows a strong self-activated photoluminescence centered at 2.2 eV. The other two materials have a weak self-activated signal at 2.2 and 2.9 eV. We provide an explanation for the origin of these signals taking into account the analysis of the polyhedral coordination around the pentavalent cations (V, Nb, and Ta). Finally, the characteristic green (5D4 → 7FJ) and NIR (2F5/2 → 2F7/2) emissions of Tb3+ and Yb3+ have been analyzed and explained.
dc.description.sponsorship The authors thank the financial support from the Spanish Ministerio de Ciencia, Innovación y Universidades, Spanish Research Agency (AEI), Generalitat Valenciana, and European Fund for Regional Development (ERDF, FEDER) under grants no. MAT2016-75586-C4-1/2-P, RTI2018-101020-BI00, RED2018-102612-T (MALTA Consolier Team), and Prometeo/2018/123 (EFIMAT). P.B. acknowledges financial support from the Kempe Foundation and the Knut & Alice Wallenberg Foundation via a doctoral studentship. A.B.G. thanks the support provided by Universitat de Valencia to perform a research stay (Atracció de Talent, VLC-CAMPUS).
dc.format.extent 11
dc.language.iso eng
dc.publisher American Chemical Society
dc.rights Copyright © 2020 American Chemical Society
dc.rights Atribución 3.0 España
dc.subject.other Crystal Structure
dc.subject.other Energy
dc.subject.other Ions
dc.subject.other Materials
dc.subject.other Optical Properties
dc.title Investigation on the Luminescence Properties of InMO4 (M = V5+, Nb5+, Ta5+) Crystals Doped with Tb3+ or Yb3+ Rare Earth Ions
dc.type article
dc.subject.eciencia Física
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. MAT2016-75586-C4-1/2-P
dc.relation.projectID Gobierno de España. RTI2018-101020-BI00
dc.relation.projectID Gobierno de España. RED2018-102612-T
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 2148
dc.identifier.publicationissue 5
dc.identifier.publicationlastpage 2158
dc.identifier.publicationtitle ACS Omega
dc.identifier.publicationvolume 5
dc.identifier.uxxi AR/0000025585
dc.contributor.funder Ministerio de Ciencia, Innovación y Universidades (España)
dc.affiliation.dpto UC3M. Departamento de Física
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