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

Bo Wu; Than Zaw Oo; Xianglin Li; Xinfeng Liu; Xiangyang Wu; Edwin Kok Lee Yeow; Hong Jin Fan; Nripan Mathews; Tze Chien Sum

doi:10.1021/jp303672f

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

Bo Wu, Than Zaw Oo, Xianglin Li, Xinfeng Liu, Xiangyang Wu, Edwin Kok Lee Yeow, Hong Jin Fan, Nripan Mathews, Tze Chien Sum^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

Efficiency enhancement in plasmonic bulk heterojunction (PCDTBT:PCBM) organic solar cells (OSCs) is demonstrated with the integration of large-area periodic Ag nanotriangle (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.

Original language	English
Pages (from-to)	14820-14825
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	116
Issue number	28
DOIs	https://doi.org/10.1021/jp303672f
Publication status	Published - Jul 19 2012
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "Efficiency enhancement in bulk-heterojunction solar cells integrated with large-area Ag nanotriangle arrays",

abstract = "Efficiency enhancement in plasmonic bulk heterojunction (PCDTBT:PCBM) organic solar cells (OSCs) is demonstrated with the integration of large-area periodic Ag nanotriangle (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.",

author = "Bo Wu and Oo, {Than Zaw} and Xianglin Li and Xinfeng Liu and Xiangyang Wu and Yeow, {Edwin Kok Lee} and Fan, {Hong Jin} and Nripan Mathews and Sum, {Tze Chien}",

year = "2012",

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doi = "10.1021/jp303672f",

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T1 - Efficiency enhancement in bulk-heterojunction solar cells integrated with large-area Ag nanotriangle arrays

AU - Wu, Bo

AU - Oo, Than Zaw

AU - Li, Xianglin

AU - Liu, Xinfeng

AU - Wu, Xiangyang

AU - Yeow, Edwin Kok Lee

AU - Fan, Hong Jin

AU - Mathews, Nripan

AU - Sum, Tze Chien

PY - 2012/7/19

Y1 - 2012/7/19

N2 - Efficiency enhancement in plasmonic bulk heterojunction (PCDTBT:PCBM) organic solar cells (OSCs) is demonstrated with the integration of large-area periodic Ag nanotriangle (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.

AB - Efficiency enhancement in plasmonic bulk heterojunction (PCDTBT:PCBM) organic solar cells (OSCs) is demonstrated with the integration of large-area periodic Ag nanotriangle (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.

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

Abstract

ASJC Scopus Subject Areas

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