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Title: Elucidating the localized plasmonic enhancement effects from a single Ag nanowire in organic solar cells
Authors: Liu, Xinfeng
Wu, Bo
Zhang, Qing
Yip, Jing Ngei
Yu, Guannan
Xiong, Qihua
Mathews, Nripan
Sum, Tze Chien
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics
Issue Date: 2014
Source: 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.
Series/Report no.: ACS nano
Abstract: 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.
DOI: 10.1021/nn505020e
Rights: © 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: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
ERI@N Journal Articles
MSE Journal Articles
SPMS Journal Articles

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