Charge carrier dynamics in alternating polyfluorene copolymer: Fullerene blends probed by terahertz spectroscopy

Hynek Nemec; Han-Kwang Nienhuys; Fengling Zhang; Olle Inganas; Arkady Yartsev; Villy Sundström

doi:10.1021/jp710184r

Charge carrier dynamics in alternating polyfluorene copolymer: Fullerene blends probed by terahertz spectroscopy

Hynek Nemec, Han-Kwang Nienhuys, Fengling Zhang, Olle Inganas, Arkady Yartsev, Villy Sundström

Chemical Physics

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

Abstract

Time-resolved terahertz spectroscopy is used for investigation of photoinduced charge carrier dynamics in blends of a polyfluorene copolymer (poly [2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3-benzothi adiazole)]) and an electron acceptor ([6,6]-phenyl-C-61-butyric acid methyl ester). The transient far-infrared response appears instantaneously after photoexcitation. We show that the transient conductivity spectrum is dominated by two major contributions: response of separated charge carriers and response of coupled polaron pairs.

Original language	English
Pages (from-to)	6558-6563
Journal	Journal of Physical Chemistry C
Volume	112
Issue number	16
DOIs	https://doi.org/10.1021/jp710184r
Publication status	Published - 2008

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Chemical Physics (S) (011001060)

Subject classification (UKÄ)

Atom and Molecular Physics and Optics

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10.1021/jp710184r

Cite this

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title = "Charge carrier dynamics in alternating polyfluorene copolymer: Fullerene blends probed by terahertz spectroscopy",

abstract = "Time-resolved terahertz spectroscopy is used for investigation of photoinduced charge carrier dynamics in blends of a polyfluorene copolymer (poly [2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3-benzothi adiazole)]) and an electron acceptor ([6,6]-phenyl-C-61-butyric acid methyl ester). The transient far-infrared response appears instantaneously after photoexcitation. We show that the transient conductivity spectrum is dominated by two major contributions: response of separated charge carriers and response of coupled polaron pairs.",

author = "Hynek Nemec and Han-Kwang Nienhuys and Fengling Zhang and Olle Inganas and Arkady Yartsev and Villy Sundstr{\"o}m",

note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)",

year = "2008",

doi = "10.1021/jp710184r",

language = "English",

volume = "112",

pages = "6558--6563",

journal = "Journal of Physical Chemistry C",

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T1 - Charge carrier dynamics in alternating polyfluorene copolymer: Fullerene blends probed by terahertz spectroscopy

AU - Nemec, Hynek

AU - Nienhuys, Han-Kwang

AU - Zhang, Fengling

AU - Inganas, Olle

AU - Yartsev, Arkady

AU - Sundström, Villy

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Chemical Physics (S) (011001060)

PY - 2008

Y1 - 2008

N2 - Time-resolved terahertz spectroscopy is used for investigation of photoinduced charge carrier dynamics in blends of a polyfluorene copolymer (poly [2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3-benzothi adiazole)]) and an electron acceptor ([6,6]-phenyl-C-61-butyric acid methyl ester). The transient far-infrared response appears instantaneously after photoexcitation. We show that the transient conductivity spectrum is dominated by two major contributions: response of separated charge carriers and response of coupled polaron pairs.

AB - Time-resolved terahertz spectroscopy is used for investigation of photoinduced charge carrier dynamics in blends of a polyfluorene copolymer (poly [2,7-(9,9-dioctyl-fluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3-benzothi adiazole)]) and an electron acceptor ([6,6]-phenyl-C-61-butyric acid methyl ester). The transient far-infrared response appears instantaneously after photoexcitation. We show that the transient conductivity spectrum is dominated by two major contributions: response of separated charge carriers and response of coupled polaron pairs.

U2 - 10.1021/jp710184r

DO - 10.1021/jp710184r

M3 - Article

SN - 1932-7447

VL - 112

SP - 6558

EP - 6563

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 16

ER -

Charge carrier dynamics in alternating polyfluorene copolymer: Fullerene blends probed by terahertz spectroscopy

Abstract

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