Prolonging charge separation in P3HT-SWNT composites using highly enriched semiconducting nanotubes

Josh M. Holt; Andrew J. Ferguson; Nikos Kopidakis; Brian A. Larsen; Justin Bult; Garry Rumbles; Jeffrey L. Blackburn

doi:10.1021/nl102753z

Prolonging charge separation in P3HT-SWNT composites using highly enriched semiconducting nanotubes

Josh M. Holt, Andrew J. Ferguson, Nikos Kopidakis, Brian A. Larsen, Justin Bult, Garry Rumbles, Jeffrey L. Blackburn

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

108 Citations (Scopus)

Abstract

Single-walled carbon nanotubes (SWNTs) have potential as electron acceptors in organic photovoltaics (OPVs), but the currently low-power conversion efficiencies of devices remain largely unexplained. We demonstrate effective redispersion of isolated, highly enriched semiconducting and metallic SWNTs into poly(3-hexylthiophene) (P3HT). We use these enriched blends to provide the first experimental evidence of the negative impact of metallic nanotubes. Time-resolved microwave conductivity reveals that the long-lived carrier population can be significantly increased by incorporating highly enriched semiconducting SWNTs into semiconducting polymer composites.

Original language	English
Pages (from-to)	4627-4633
Number of pages	7
Journal	Nano Letters
Volume	10
Issue number	11
DOIs	https://doi.org/10.1021/nl102753z
Publication status	Published - 10 Nov 2010
Externally published	Yes

Keywords

charge generation
charge recombination
organic photovoltaic
P3HT
polythiophene
Single-walled carbon nanotubes
time-resolved microwave conductivity

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10.1021/nl102753z

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title = "Prolonging charge separation in P3HT-SWNT composites using highly enriched semiconducting nanotubes",

abstract = "Single-walled carbon nanotubes (SWNTs) have potential as electron acceptors in organic photovoltaics (OPVs), but the currently low-power conversion efficiencies of devices remain largely unexplained. We demonstrate effective redispersion of isolated, highly enriched semiconducting and metallic SWNTs into poly(3-hexylthiophene) (P3HT). We use these enriched blends to provide the first experimental evidence of the negative impact of metallic nanotubes. Time-resolved microwave conductivity reveals that the long-lived carrier population can be significantly increased by incorporating highly enriched semiconducting SWNTs into semiconducting polymer composites.",

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T1 - Prolonging charge separation in P3HT-SWNT composites using highly enriched semiconducting nanotubes

AU - Holt, Josh M.

AU - Ferguson, Andrew J.

AU - Kopidakis, Nikos

AU - Larsen, Brian A.

AU - Bult, Justin

AU - Rumbles, Garry

AU - Blackburn, Jeffrey L.

PY - 2010/11/10

Y1 - 2010/11/10

N2 - Single-walled carbon nanotubes (SWNTs) have potential as electron acceptors in organic photovoltaics (OPVs), but the currently low-power conversion efficiencies of devices remain largely unexplained. We demonstrate effective redispersion of isolated, highly enriched semiconducting and metallic SWNTs into poly(3-hexylthiophene) (P3HT). We use these enriched blends to provide the first experimental evidence of the negative impact of metallic nanotubes. Time-resolved microwave conductivity reveals that the long-lived carrier population can be significantly increased by incorporating highly enriched semiconducting SWNTs into semiconducting polymer composites.

AB - Single-walled carbon nanotubes (SWNTs) have potential as electron acceptors in organic photovoltaics (OPVs), but the currently low-power conversion efficiencies of devices remain largely unexplained. We demonstrate effective redispersion of isolated, highly enriched semiconducting and metallic SWNTs into poly(3-hexylthiophene) (P3HT). We use these enriched blends to provide the first experimental evidence of the negative impact of metallic nanotubes. Time-resolved microwave conductivity reveals that the long-lived carrier population can be significantly increased by incorporating highly enriched semiconducting SWNTs into semiconducting polymer composites.

KW - charge generation

KW - charge recombination

KW - organic photovoltaic

KW - P3HT

KW - polythiophene

KW - Single-walled carbon nanotubes

KW - time-resolved microwave conductivity

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JO - Nano Letters

JF - Nano Letters

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Prolonging charge separation in P3HT-SWNT composites using highly enriched semiconducting nanotubes

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Keywords

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