Elucidating the localized plasmonic enhancement effects from a single Ag nanowire in organic solar cells

The origins of performance enhancement in hybrid plasmonic organic photovoltaic devices are often embroiled in a complex interaction of light scattering, localized surface plasmon resonances, exciton–plasmon energy transfer and even nonplasmonic effects. To clearly deconvolve the plasmonic contribut...

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Main Authors: Liu, Xinfeng, Wu, Bo, Zhang, Qing, Yip, Jing Ngei, Yu, Guannan, Xiong, Qihua, Mathews, Nripan, Sum, Tze Chien
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2015
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Online Access:https://hdl.handle.net/10356/106658
http://hdl.handle.net/10220/25024
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1066582021-01-08T06:57:45Z Elucidating the localized plasmonic enhancement effects from a single Ag nanowire in organic solar cells Liu, Xinfeng Wu, Bo Zhang, Qing Yip, Jing Ngei Yu, Guannan Xiong, Qihua Mathews, Nripan Sum, Tze Chien School of Electrical and Electronic Engineering School of Materials Science & Engineering School of Physical and Mathematical Sciences Energy Research Institute @ NTU (ERI@N) DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics The origins of performance enhancement in hybrid plasmonic organic photovoltaic devices are often embroiled in a complex interaction of light scattering, localized surface plasmon resonances, exciton–plasmon energy transfer and even nonplasmonic effects. To clearly deconvolve the plasmonic contributions from a single nanostructure, we herein investigate the influence of a single silver nanowire (NW) on the charge carriers in bulk heterojunction polymer solar cells using spatially resolved optical spectroscopy, and correlate to electrical device characterization. Polarization-dependent photocurrent enhancements with a maximum of ∼36% over the reference are observed when the transverse mode of the plasmonic excitations in the Ag NW is activated. The ensuing higher absorbance and light scattering induced by the electronic motion perpendicular to the NW long axis lead to increased exciton and polaron densities instead of direct surface plasmon-exciton energy transfer. Finite-difference time-domain simulations also validate these findings. Importantly, our study at the single nanostructure level explores the fundamental limits of plasmonic enhancement achievable in organic solar cells with a single plasmonic nanostructure. Accepted version 2015-02-06T04:06:40Z 2019-12-06T22:15:46Z 2015-02-06T04:06:40Z 2019-12-06T22:15:46Z 2014 2014 Journal Article Liu, X., Wu, B., Zhang, Q., Yip, J. N., Yu, G., Xiong, Q., et al. (2014). Elucidating the localized plasmonic enhancement effects from a single Ag nanowire in organic solar cells. ACS nano, 8(10), 10101–10110. https://hdl.handle.net/10356/106658 http://hdl.handle.net/10220/25024 10.1021/nn505020e 183208 en ACS nano © 2014 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by ACS Nano, 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: [http://dx.doi.org/10.1021/nn505020e]. 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::Electrical and electronic engineering::Nanoelectronics
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics
Liu, Xinfeng
Wu, Bo
Zhang, Qing
Yip, Jing Ngei
Yu, Guannan
Xiong, Qihua
Mathews, Nripan
Sum, Tze Chien
Elucidating the localized plasmonic enhancement effects from a single Ag nanowire in organic solar cells
description The origins of performance enhancement in hybrid plasmonic organic photovoltaic devices are often embroiled in a complex interaction of light scattering, localized surface plasmon resonances, exciton–plasmon energy transfer and even nonplasmonic effects. To clearly deconvolve the plasmonic contributions from a single nanostructure, we herein investigate the influence of a single silver nanowire (NW) on the charge carriers in bulk heterojunction polymer solar cells using spatially resolved optical spectroscopy, and correlate to electrical device characterization. Polarization-dependent photocurrent enhancements with a maximum of ∼36% over the reference are observed when the transverse mode of the plasmonic excitations in the Ag NW is activated. The ensuing higher absorbance and light scattering induced by the electronic motion perpendicular to the NW long axis lead to increased exciton and polaron densities instead of direct surface plasmon-exciton energy transfer. Finite-difference time-domain simulations also validate these findings. Importantly, our study at the single nanostructure level explores the fundamental limits of plasmonic enhancement achievable in organic solar cells with a single plasmonic nanostructure.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Liu, Xinfeng
Wu, Bo
Zhang, Qing
Yip, Jing Ngei
Yu, Guannan
Xiong, Qihua
Mathews, Nripan
Sum, Tze Chien
format Article
author Liu, Xinfeng
Wu, Bo
Zhang, Qing
Yip, Jing Ngei
Yu, Guannan
Xiong, Qihua
Mathews, Nripan
Sum, Tze Chien
author_sort Liu, Xinfeng
title Elucidating the localized plasmonic enhancement effects from a single Ag nanowire in organic solar cells
title_short Elucidating the localized plasmonic enhancement effects from a single Ag nanowire in organic solar cells
title_full Elucidating the localized plasmonic enhancement effects from a single Ag nanowire in organic solar cells
title_fullStr Elucidating the localized plasmonic enhancement effects from a single Ag nanowire in organic solar cells
title_full_unstemmed Elucidating the localized plasmonic enhancement effects from a single Ag nanowire in organic solar cells
title_sort elucidating the localized plasmonic enhancement effects from a single ag nanowire in organic solar cells
publishDate 2015
url https://hdl.handle.net/10356/106658
http://hdl.handle.net/10220/25024
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