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

34 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 Sept 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",

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doi = "10.1021/jz301013u",

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journal = "The Journal of Physical Chemistry Letters",

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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

N2 - 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.

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.

UR - https://www.scopus.com/pages/publications/84865985528

U2 - 10.1021/jz301013u

DO - 10.1021/jz301013u

M3 - Article

SN - 1948-7185

VL - 3

SP - 2442

EP - 2446

JO - The Journal of Physical Chemistry Letters

JF - The Journal of Physical Chemistry Letters

IS - 17

ER -

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

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