Near-field multiple scattering effects of plasmonic nanospheres embedded into thin-film organic solar cells

Wei E.I. Sha; Wallace C.H. Choy; Yang G. Liu; Weng Cho Chew

doi:10.1063/1.3638466

Near-field multiple scattering effects of plasmonic nanospheres embedded into thin-film organic solar cells

Wei E.I. Sha, Wallace C.H. Choy, Yang G. Liu, Weng Cho Chew

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

Abstract

We investigate near-field multiple scattering effects of plasmonic nanospheres (NSPs) embedded into organic solar cells (OSCs). When NSPs are embedded into a spacer layer, the near-field scattering from the NSPs shows strong direction-dependent features, which significantly affects the optical absorption. When NSPs are embedded into an active layer, the absorption enhancement is attributed to the interplay between longitudinal and transverse modes supported by the NSP chain. The breakdown of electrostatic scaling law is confirmed by our theoretical model and should be accounted for optical designs of OSCs. The work provides the fundamental physical understanding and design guidelines for plasmonic photovoltaics.

Original language	English (US)
Article number	113304
Journal	Applied Physics Letters
Volume	99
Issue number	11
DOIs	https://doi.org/10.1063/1.3638466
State	Published - Sep 12 2011
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3638466

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title = "Near-field multiple scattering effects of plasmonic nanospheres embedded into thin-film organic solar cells",

abstract = "We investigate near-field multiple scattering effects of plasmonic nanospheres (NSPs) embedded into organic solar cells (OSCs). When NSPs are embedded into a spacer layer, the near-field scattering from the NSPs shows strong direction-dependent features, which significantly affects the optical absorption. When NSPs are embedded into an active layer, the absorption enhancement is attributed to the interplay between longitudinal and transverse modes supported by the NSP chain. The breakdown of electrostatic scaling law is confirmed by our theoretical model and should be accounted for optical designs of OSCs. The work provides the fundamental physical understanding and design guidelines for plasmonic photovoltaics.",

author = "Sha, {Wei E.I.} and Choy, {Wallace C.H.} and Liu, {Yang G.} and {Cho Chew}, Weng",

note = "Funding Information: The authors acknowledge the support of the grants (Nos. 712010, 711609, and 711511) from the Research Grant Council of the Hong Kong. This project is also supported in part by a Hong Kong UGC Special Equipment Grant (SEG HKU09).",

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N1 - Funding Information: The authors acknowledge the support of the grants (Nos. 712010, 711609, and 711511) from the Research Grant Council of the Hong Kong. This project is also supported in part by a Hong Kong UGC Special Equipment Grant (SEG HKU09).

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N2 - We investigate near-field multiple scattering effects of plasmonic nanospheres (NSPs) embedded into organic solar cells (OSCs). When NSPs are embedded into a spacer layer, the near-field scattering from the NSPs shows strong direction-dependent features, which significantly affects the optical absorption. When NSPs are embedded into an active layer, the absorption enhancement is attributed to the interplay between longitudinal and transverse modes supported by the NSP chain. The breakdown of electrostatic scaling law is confirmed by our theoretical model and should be accounted for optical designs of OSCs. The work provides the fundamental physical understanding and design guidelines for plasmonic photovoltaics.

AB - We investigate near-field multiple scattering effects of plasmonic nanospheres (NSPs) embedded into organic solar cells (OSCs). When NSPs are embedded into a spacer layer, the near-field scattering from the NSPs shows strong direction-dependent features, which significantly affects the optical absorption. When NSPs are embedded into an active layer, the absorption enhancement is attributed to the interplay between longitudinal and transverse modes supported by the NSP chain. The breakdown of electrostatic scaling law is confirmed by our theoretical model and should be accounted for optical designs of OSCs. The work provides the fundamental physical understanding and design guidelines for plasmonic photovoltaics.

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Near-field multiple scattering effects of plasmonic nanospheres embedded into thin-film organic solar cells

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