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Investigation on the Luminescence Properties of InMO(4) (M = V(5+), Nb(5+), Ta(5+)) Crystals Doped with Tb(3+) or Yb(3+) Rare Earth Ions

[Image: see text] We explore the potential of Tb- and Yb-doped InVO(4), InTaO(4), and InNbO(4) 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...

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Autores principales: Botella, Pablo, Enrichi, Francesco, Vomiero, Alberto, Muñoz-Santiuste, Juan E., Garg, Alka B., Arvind, Ananthanarayanan, Manjón, Francisco J., Segura, Alfredo, Errandonea, Daniel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7016905/
https://www.ncbi.nlm.nih.gov/pubmed/32064375
http://dx.doi.org/10.1021/acsomega.9b02862
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author Botella, Pablo
Enrichi, Francesco
Vomiero, Alberto
Muñoz-Santiuste, Juan E.
Garg, Alka B.
Arvind, Ananthanarayanan
Manjón, Francisco J.
Segura, Alfredo
Errandonea, Daniel
author_facet Botella, Pablo
Enrichi, Francesco
Vomiero, Alberto
Muñoz-Santiuste, Juan E.
Garg, Alka B.
Arvind, Ananthanarayanan
Manjón, Francisco J.
Segura, Alfredo
Errandonea, Daniel
author_sort Botella, Pablo
collection PubMed
description [Image: see text] We explore the potential of Tb- and Yb-doped InVO(4), InTaO(4), and InNbO(4) 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 InVO(4), 4.7/5.3 in InNbO(4), and 5.6/6.1 eV in InTaO(4). In the last two cases, these band gaps are larger than the fundamental band gap (being indirect gap materials), while for InVO(4), 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 ((5)D(4) → (7)F(J)) and NIR ((2)F(5/2) → (2)F(7/2)) emissions of Tb(3+) and Yb(3+) have been analyzed and explained.
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spelling pubmed-70169052020-02-14 Investigation on the Luminescence Properties of InMO(4) (M = V(5+), Nb(5+), Ta(5+)) Crystals Doped with Tb(3+) or Yb(3+) Rare Earth Ions Botella, Pablo Enrichi, Francesco Vomiero, Alberto Muñoz-Santiuste, Juan E. Garg, Alka B. Arvind, Ananthanarayanan Manjón, Francisco J. Segura, Alfredo Errandonea, Daniel ACS Omega [Image: see text] We explore the potential of Tb- and Yb-doped InVO(4), InTaO(4), and InNbO(4) 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 InVO(4), 4.7/5.3 in InNbO(4), and 5.6/6.1 eV in InTaO(4). In the last two cases, these band gaps are larger than the fundamental band gap (being indirect gap materials), while for InVO(4), 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 ((5)D(4) → (7)F(J)) and NIR ((2)F(5/2) → (2)F(7/2)) emissions of Tb(3+) and Yb(3+) have been analyzed and explained. American Chemical Society 2020-01-30 /pmc/articles/PMC7016905/ /pubmed/32064375 http://dx.doi.org/10.1021/acsomega.9b02862 Text en Copyright © 2020 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Botella, Pablo
Enrichi, Francesco
Vomiero, Alberto
Muñoz-Santiuste, Juan E.
Garg, Alka B.
Arvind, Ananthanarayanan
Manjón, Francisco J.
Segura, Alfredo
Errandonea, Daniel
Investigation on the Luminescence Properties of InMO(4) (M = V(5+), Nb(5+), Ta(5+)) Crystals Doped with Tb(3+) or Yb(3+) Rare Earth Ions
title Investigation on the Luminescence Properties of InMO(4) (M = V(5+), Nb(5+), Ta(5+)) Crystals Doped with Tb(3+) or Yb(3+) Rare Earth Ions
title_full Investigation on the Luminescence Properties of InMO(4) (M = V(5+), Nb(5+), Ta(5+)) Crystals Doped with Tb(3+) or Yb(3+) Rare Earth Ions
title_fullStr Investigation on the Luminescence Properties of InMO(4) (M = V(5+), Nb(5+), Ta(5+)) Crystals Doped with Tb(3+) or Yb(3+) Rare Earth Ions
title_full_unstemmed Investigation on the Luminescence Properties of InMO(4) (M = V(5+), Nb(5+), Ta(5+)) Crystals Doped with Tb(3+) or Yb(3+) Rare Earth Ions
title_short Investigation on the Luminescence Properties of InMO(4) (M = V(5+), Nb(5+), Ta(5+)) Crystals Doped with Tb(3+) or Yb(3+) Rare Earth Ions
title_sort investigation on the luminescence properties of inmo(4) (m = v(5+), nb(5+), ta(5+)) crystals doped with tb(3+) or yb(3+) rare earth ions
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7016905/
https://www.ncbi.nlm.nih.gov/pubmed/32064375
http://dx.doi.org/10.1021/acsomega.9b02862
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