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In Situ Visualization of Localized Surface Plasmon Resonance‐Driven Hot Hole Flux
Nonradiative surface plasmon decay produces highly energetic electron–hole pairs with desirable characteristics, but the measurement and harvesting of nonequilibrium hot holes remain challenging due to ultrashort lifetime and diffusion length. Here, the direct observation of LSPR‐driven hot holes cr...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7578898/ https://www.ncbi.nlm.nih.gov/pubmed/33101854 http://dx.doi.org/10.1002/advs.202001148 |
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author | Lee, Hyunhwa Song, Kyoungjae Lee, Moonsang Park, Jeong Young |
author_facet | Lee, Hyunhwa Song, Kyoungjae Lee, Moonsang Park, Jeong Young |
author_sort | Lee, Hyunhwa |
collection | PubMed |
description | Nonradiative surface plasmon decay produces highly energetic electron–hole pairs with desirable characteristics, but the measurement and harvesting of nonequilibrium hot holes remain challenging due to ultrashort lifetime and diffusion length. Here, the direct observation of LSPR‐driven hot holes created in a Au nanoprism/p‐GaN platform using photoconductive atomic force microscopy (pc‐AFM) is demonstrated. Significant enhancement of photocurrent in the plasmonic platforms under light irradiation is revealed, providing direct evidence of plasmonic hot hole generation. Experimental and numerical analysis verify that a confined |E|‐field surrounding a single Au nanoprism spurs resonant coupling between localized surface plasmon resonance (LSPR) and surface charges, thus boosting hot hole generation. Furthermore, geometrical and size dependence on the extraction of LSPR‐driven hot holes suggests an optimized pathway for their efficient utilization. The direct visualization of hot hole flow at the nanoscale provides significant opportunities for harnessing the underlying nature and potential of plasmonic hot holes. |
format | Online Article Text |
id | pubmed-7578898 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-75788982020-10-23 In Situ Visualization of Localized Surface Plasmon Resonance‐Driven Hot Hole Flux Lee, Hyunhwa Song, Kyoungjae Lee, Moonsang Park, Jeong Young Adv Sci (Weinh) Full Papers Nonradiative surface plasmon decay produces highly energetic electron–hole pairs with desirable characteristics, but the measurement and harvesting of nonequilibrium hot holes remain challenging due to ultrashort lifetime and diffusion length. Here, the direct observation of LSPR‐driven hot holes created in a Au nanoprism/p‐GaN platform using photoconductive atomic force microscopy (pc‐AFM) is demonstrated. Significant enhancement of photocurrent in the plasmonic platforms under light irradiation is revealed, providing direct evidence of plasmonic hot hole generation. Experimental and numerical analysis verify that a confined |E|‐field surrounding a single Au nanoprism spurs resonant coupling between localized surface plasmon resonance (LSPR) and surface charges, thus boosting hot hole generation. Furthermore, geometrical and size dependence on the extraction of LSPR‐driven hot holes suggests an optimized pathway for their efficient utilization. The direct visualization of hot hole flow at the nanoscale provides significant opportunities for harnessing the underlying nature and potential of plasmonic hot holes. John Wiley and Sons Inc. 2020-08-06 /pmc/articles/PMC7578898/ /pubmed/33101854 http://dx.doi.org/10.1002/advs.202001148 Text en © 2020 The Authors. Published by Wiley‐VCH GmbH This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Full Papers Lee, Hyunhwa Song, Kyoungjae Lee, Moonsang Park, Jeong Young In Situ Visualization of Localized Surface Plasmon Resonance‐Driven Hot Hole Flux |
title | In Situ Visualization of Localized Surface Plasmon Resonance‐Driven Hot Hole Flux |
title_full | In Situ Visualization of Localized Surface Plasmon Resonance‐Driven Hot Hole Flux |
title_fullStr | In Situ Visualization of Localized Surface Plasmon Resonance‐Driven Hot Hole Flux |
title_full_unstemmed | In Situ Visualization of Localized Surface Plasmon Resonance‐Driven Hot Hole Flux |
title_short | In Situ Visualization of Localized Surface Plasmon Resonance‐Driven Hot Hole Flux |
title_sort | in situ visualization of localized surface plasmon resonance‐driven hot hole flux |
topic | Full Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7578898/ https://www.ncbi.nlm.nih.gov/pubmed/33101854 http://dx.doi.org/10.1002/advs.202001148 |
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