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Engineering upconversion emission spectra using plasmonic nanocavities.

Identifieur interne : 000162 ( PubMed/Corpus ); précédent : 000161; suivant : 000163

Engineering upconversion emission spectra using plasmonic nanocavities.

Auteurs : Christopher Lantigua ; Sha He ; Milad Akhlaghi Bouzan ; William Hayenga ; Noah J J. Johnson ; Adah Almutairi ; Mercedeh Khajavikhan

Source :

RBID : pubmed:24978717

English descriptors

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:24978717

Le document en format XML

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<name sortKey="He, Sha" sort="He, Sha" uniqKey="He S" first="Sha" last="He">Sha He</name>
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<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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<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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<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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