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Efficiency enhancement in bulk-heterojunction solar cells integrated with large area Ag nano-triangle arrays

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Efficiency enhancement in bulk-heterojunction solar cells integrated with large area Ag nano-triangle arrays

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Title: Efficiency enhancement in bulk-heterojunction solar cells integrated with large area Ag nano-triangle arrays
Author: Wu, Bo; Oo, Than Zaw; Li, Xianglin; Liu, Xinfeng; Wu, Xiangyang; Yeow, Edwin Kok Lee; Fan, Hong Jin; Mathews, Nripan; Sum, Tze Chien
Copyright year: 2012
Abstract: Efficiency enhancement in plasmonic bulk heterojunction (PCDTBT:PCBM) organic solar cells (OSCs) is demonstrated with the integration of large area periodic Ag nano-triangle (NT) arrays (that were fabricated using the cost-effective, high throughput nanosphere lithography technique) in the OSC device. The improvements to the power conversion efficiency (from 4.24% to 4.52%) and to the short circuit current density (by ~12%) are attributed to an increase in exciton generation induced by the strong local E-field and the scattering generated by the localized surface plasmon resonance of the hexagonal NT arrays. These findings are validated by a range of steady state and transient optical spectroscopy and correlated with device performance data. Importantly, our work demonstrates the feasibility of integrating a simple cost-effective, tailorable and scalable nanofabrication technique with existing OSC fabrication processes.
Subject: DRNTU::Science::Mathematics.
Type: Journal Article
Series/ Journal Title: The journal of physical chemistry C
School: School of Physical and Mathematical Sciences
Rights: © 2012 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: DOI [http://dx.doi.org/10.1021/jp303672f].
Version: Accepted version

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