Engineering upconversion emission spectra using plasmonic nanocavities.
Identifieur interne : 000162 ( PubMed/Corpus ); précédent : 000161; suivant : 000163Engineering upconversion emission spectra using plasmonic nanocavities.
Auteurs : Christopher Lantigua ; Sha He ; Milad Akhlaghi Bouzan ; William Hayenga ; Noah J J. Johnson ; Adah Almutairi ; Mercedeh KhajavikhanSource :
- Optics letters [ 1539-4794 ] ; 2014.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Fluorides, Thulium, Ytterbium, Yttrium.
- chemistry : Metal Nanoparticles, Nanoshells.
- Optical Phenomena, Spectrophotometry, Ultraviolet, Spectroscopy, Near-Infrared, Surface Plasmon Resonance.
Abstract
We show that the upconversion emission spectra of Tm³⁺ and Yb³⁺ codoped β-NaYF₄-NaYF₄ core-shell nanoparticles can be judiciously modified by means of plasmonic nanocavities. Our analysis indicates that more than a 30-fold increase in conversion efficiency to the UV spectral band can be expected by engineering the NIR absorption and the local density of states. The effect of the nanocavity on the resulting radiation patterns is discussed. Our results are exemplified in cylindrical cavity geometries.
PubMed: 24978717
Links to Exploration step
pubmed:24978717Le document en format XML
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<author><name sortKey="He, Sha" sort="He, Sha" uniqKey="He S" first="Sha" last="He">Sha He</name>
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<author><name sortKey="Bouzan, Milad Akhlaghi" sort="Bouzan, Milad Akhlaghi" uniqKey="Bouzan M" first="Milad Akhlaghi" last="Bouzan">Milad Akhlaghi Bouzan</name>
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<author><name sortKey="Hayenga, William" sort="Hayenga, William" uniqKey="Hayenga W" first="William" last="Hayenga">William Hayenga</name>
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<author><name sortKey="Johnson, Noah J J" sort="Johnson, Noah J J" uniqKey="Johnson N" first="Noah J J" last="Johnson">Noah J J. Johnson</name>
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<author><name sortKey="Khajavikhan, Mercedeh" sort="Khajavikhan, Mercedeh" uniqKey="Khajavikhan M" first="Mercedeh" last="Khajavikhan">Mercedeh Khajavikhan</name>
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<author><name sortKey="Bouzan, Milad Akhlaghi" sort="Bouzan, Milad Akhlaghi" uniqKey="Bouzan M" first="Milad Akhlaghi" last="Bouzan">Milad Akhlaghi Bouzan</name>
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<front><div type="abstract" xml:lang="en">We show that the upconversion emission spectra of Tm³⁺ and Yb³⁺ codoped β-NaYF₄-NaYF₄ core-shell nanoparticles can be judiciously modified by means of plasmonic nanocavities. Our analysis indicates that more than a 30-fold increase in conversion efficiency to the UV spectral band can be expected by engineering the NIR absorption and the local density of states. The effect of the nanocavity on the resulting radiation patterns is discussed. Our results are exemplified in cylindrical cavity geometries.</div>
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<Abstract><AbstractText>We show that the upconversion emission spectra of Tm³⁺ and Yb³⁺ codoped β-NaYF₄-NaYF₄ core-shell nanoparticles can be judiciously modified by means of plasmonic nanocavities. Our analysis indicates that more than a 30-fold increase in conversion efficiency to the UV spectral band can be expected by engineering the NIR absorption and the local density of states. The effect of the nanocavity on the resulting radiation patterns is discussed. Our results are exemplified in cylindrical cavity geometries.</AbstractText>
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