Edge-gold-coated silver nanoprisms : enhanced stability and applications in organic photovoltaics and chemical sensing

We report a facile synthetic route for edge-gold-coated silver nanoprisms (GSNPs) and their comprehensive optical and structural characterization. The GSNPs exhibit remarkably high stability toward chemical etching and excellent performance as both optical antennae for light-harvesting applications...

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Main Authors: Shahjamali, Mohammad M., Salvador, Michael, Bosman, Michel, Ginger, David S., Xue, Can
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2014
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Online Access:https://hdl.handle.net/10356/101604
http://hdl.handle.net/10220/24204
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1016042023-07-14T15:57:20Z Edge-gold-coated silver nanoprisms : enhanced stability and applications in organic photovoltaics and chemical sensing Shahjamali, Mohammad M. Salvador, Michael Bosman, Michel Ginger, David S. Xue, Can School of Materials Science & Engineering DRNTU::Engineering::Materials::Organic/Polymer electronics We report a facile synthetic route for edge-gold-coated silver nanoprisms (GSNPs) and their comprehensive optical and structural characterization. The GSNPs exhibit remarkably high stability toward chemical etching and excellent performance as both optical antennae for light-harvesting applications and refractive index sensors. We show that when embedded into a photovoltaic bulk heterojunction film of poly(3-hexylthiophene)/phenyl-C61-butyric acid methyl ester (P3HT/PCBM), plasmonic GSNPs act as optical antennae to substantially enhance light absorption in the active organic solar cell layer. We measure a ≈7-fold enhancement in the polaron generation yield through photoinduced absorption spectroscopy. Owing to the high stability, large sensitivity factors, and strong field enhancement effect, these GSNPs exhibit great potential as optical probes for sensing and photovoltaic applications. We also show that the refractive index sensing figure of merit (FoM) of GSNPs can reach 4.05 RIU–1 and suggest based on finite-difference time-domain (FDTD) calculations that the FoM of GSNPs could reach even higher values with better control of particle dispersity. ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version 2014-11-10T06:43:51Z 2019-12-06T20:41:14Z 2014-11-10T06:43:51Z 2019-12-06T20:41:14Z 2014 2014 Journal Article Shahjamali, M. M., Salvador, M., Bosman, M., Ginger, D. S., & Xue, C. (2014). Edge-gold-coated silver nanoprisms : enhanced stability and applications in organic photovoltaics and chemical sensing. The journal of physical chemistry C, 118(23), 12459-12468. https://hdl.handle.net/10356/101604 http://hdl.handle.net/10220/24204 10.1021/jp501884s en The journal of physical chemistry C © 2014 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by The Journal of Physical Chemistry C, American Chemical Society. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [Article DOI: http://dx.doi.org/10.1021/jp501884s ]. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Materials::Organic/Polymer electronics
spellingShingle DRNTU::Engineering::Materials::Organic/Polymer electronics
Shahjamali, Mohammad M.
Salvador, Michael
Bosman, Michel
Ginger, David S.
Xue, Can
Edge-gold-coated silver nanoprisms : enhanced stability and applications in organic photovoltaics and chemical sensing
description We report a facile synthetic route for edge-gold-coated silver nanoprisms (GSNPs) and their comprehensive optical and structural characterization. The GSNPs exhibit remarkably high stability toward chemical etching and excellent performance as both optical antennae for light-harvesting applications and refractive index sensors. We show that when embedded into a photovoltaic bulk heterojunction film of poly(3-hexylthiophene)/phenyl-C61-butyric acid methyl ester (P3HT/PCBM), plasmonic GSNPs act as optical antennae to substantially enhance light absorption in the active organic solar cell layer. We measure a ≈7-fold enhancement in the polaron generation yield through photoinduced absorption spectroscopy. Owing to the high stability, large sensitivity factors, and strong field enhancement effect, these GSNPs exhibit great potential as optical probes for sensing and photovoltaic applications. We also show that the refractive index sensing figure of merit (FoM) of GSNPs can reach 4.05 RIU–1 and suggest based on finite-difference time-domain (FDTD) calculations that the FoM of GSNPs could reach even higher values with better control of particle dispersity.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Shahjamali, Mohammad M.
Salvador, Michael
Bosman, Michel
Ginger, David S.
Xue, Can
format Article
author Shahjamali, Mohammad M.
Salvador, Michael
Bosman, Michel
Ginger, David S.
Xue, Can
author_sort Shahjamali, Mohammad M.
title Edge-gold-coated silver nanoprisms : enhanced stability and applications in organic photovoltaics and chemical sensing
title_short Edge-gold-coated silver nanoprisms : enhanced stability and applications in organic photovoltaics and chemical sensing
title_full Edge-gold-coated silver nanoprisms : enhanced stability and applications in organic photovoltaics and chemical sensing
title_fullStr Edge-gold-coated silver nanoprisms : enhanced stability and applications in organic photovoltaics and chemical sensing
title_full_unstemmed Edge-gold-coated silver nanoprisms : enhanced stability and applications in organic photovoltaics and chemical sensing
title_sort edge-gold-coated silver nanoprisms : enhanced stability and applications in organic photovoltaics and chemical sensing
publishDate 2014
url https://hdl.handle.net/10356/101604
http://hdl.handle.net/10220/24204
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