Electron and hole contributions to the terahertz photoconductivity of a conjugated polymer: fullerene blend identified.

Carlito Ponseca Jr; Hynek Nemec; Nenad Vukmirovic; Sandra Fusco; Ergang Wang; Mats R. Andersson; Pavel Chabera; Arkady Yartsev; Villy Sundstrom

doi:10.1021/jz301013u

Electron and hole contributions to the terahertz photoconductivity of a conjugated polymer: fullerene blend identified.

Carlito Ponseca Jr, Hynek Nemec, Nenad Vukmirovic, Sandra Fusco, Ergang Wang, Mats R. Andersson, Pavel Chabera, Arkady Yartsev, Villy Sundstrom

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

32 Citations (Scopus)

Abstract

Time-resolved terahertz spectroscopy was employed for the investigation of charge-transport dynamics in benzothiadiazolo-dithiophene polyfluorene ([2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4′,7′-di-2-thienyl-2′, 1′,3′-benzothiadiazole)]) (APFO-3) polymers with various chain lengths and in its monomer form, all blended with an electron acceptor ([6,6]-phenyl-C61-butyric acid methyl ester, PCBM). Upon photoexcitation, charged polaron pairs are created, negative charges are transferred to fullerenes, while positive polarons remain on polymers/monomers. Vastly different hole mobility in polymer and monomer blends allows us to distinguish the hole and electron contributions to the carrier mobility.

Original language	English
Pages (from-to)	2442-2446
Number of pages	5
Journal	The Journal of Physical Chemistry Letters
Volume	3
Issue number	17
DOIs	https://doi.org/10.1021/jz301013u
Publication status	Published - 6 Sep 2012

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title = "Electron and hole contributions to the terahertz photoconductivity of a conjugated polymer: fullerene blend identified.",

abstract = "Time-resolved terahertz spectroscopy was employed for the investigation of charge-transport dynamics in benzothiadiazolo-dithiophene polyfluorene ([2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4′,7′-di-2-thienyl-2′, 1′,3′-benzothiadiazole)]) (APFO-3) polymers with various chain lengths and in its monomer form, all blended with an electron acceptor ([6,6]-phenyl-C61-butyric acid methyl ester, PCBM). Upon photoexcitation, charged polaron pairs are created, negative charges are transferred to fullerenes, while positive polarons remain on polymers/monomers. Vastly different hole mobility in polymer and monomer blends allows us to distinguish the hole and electron contributions to the carrier mobility.",

author = "{Ponseca Jr}, Carlito and Hynek Nemec and Nenad Vukmirovic and Sandra Fusco and Ergang Wang and Andersson, {Mats R.} and Pavel Chabera and Arkady Yartsev and Villy Sundstrom",

year = "2012",

month = sep,

day = "6",

doi = "10.1021/jz301013u",

language = "English",

volume = "3",

pages = "2442--2446",

journal = "The Journal of Physical Chemistry Letters",

issn = "1948-7185",

number = "17",

}

Electron and hole contributions to the terahertz photoconductivity of a conjugated polymer: fullerene blend identified. / Ponseca Jr, Carlito; Nemec, Hynek; Vukmirovic, Nenad; Fusco, Sandra; Wang, Ergang; Andersson, Mats R.; Chabera, Pavel; Yartsev, Arkady; Sundstrom, Villy.

In: The Journal of Physical Chemistry Letters, Vol. 3, No. 17, 06.09.2012, p. 2442-2446.

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

TY - JOUR

T1 - Electron and hole contributions to the terahertz photoconductivity of a conjugated polymer: fullerene blend identified.

AU - Ponseca Jr, Carlito

AU - Nemec, Hynek

AU - Vukmirovic, Nenad

AU - Fusco, Sandra

AU - Wang, Ergang

AU - Andersson, Mats R.

AU - Chabera, Pavel

AU - Yartsev, Arkady

AU - Sundstrom, Villy

PY - 2012/9/6

Y1 - 2012/9/6

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AB - Time-resolved terahertz spectroscopy was employed for the investigation of charge-transport dynamics in benzothiadiazolo-dithiophene polyfluorene ([2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4′,7′-di-2-thienyl-2′, 1′,3′-benzothiadiazole)]) (APFO-3) polymers with various chain lengths and in its monomer form, all blended with an electron acceptor ([6,6]-phenyl-C61-butyric acid methyl ester, PCBM). Upon photoexcitation, charged polaron pairs are created, negative charges are transferred to fullerenes, while positive polarons remain on polymers/monomers. Vastly different hole mobility in polymer and monomer blends allows us to distinguish the hole and electron contributions to the carrier mobility.

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JF - The Journal of Physical Chemistry Letters

SN - 1948-7185

IS - 17

ER -

Electron and hole contributions to the terahertz photoconductivity of a conjugated polymer: fullerene blend identified.

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