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

National Renewable Energy Laboratory

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

110 Scopus Citations

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	American 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 https://doi.org/10.1021/nl102753z
State	Published - 2010

NREL Publication Number

NREL/JA-590-48997

Keywords

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

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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

Y1 - 2010

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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

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Prolonging Charge Separation in P3HT-SWNT Composites Using Highly Enriched Semiconducting Nanotubes

Abstract

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Keywords

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