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Electron and Hole Contributions to the Terahertz Photoconductivity of a Conjugated Polymer:Fullerene Blend Identified

Ponseca, Carlito LU ; Nemec, Hynek ; Vukmirovic, Nenad ; Fusco, Sandra ; Wang, Ergang ; Andersson, Mats R. ; Chabera, Pavel LU ; Yartsev, Arkady LU orcid and Sundström, Villy LU (2012) In The Journal of Physical Chemistry Letters 3(17). p.2442-2446
Abstract
Time-resolved terahertz spectroscopy was employed for the investigation of charge-transport dynamics in benzothiadiazolo-dithiophene polyfluorene ([2,7-(9,9-dioctylfluorene)-alt-S,S-(4',7'-di-2-thieny1-2',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 photo-excitation, 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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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Letters
volume
3
issue
17
pages
2442 - 2446
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000308342500025
  • scopus:84865985528
  • pmid:26292130
ISSN
1948-7185
DOI
10.1021/jz301013u
language
English
LU publication?
yes
additional info
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)
id
fcff360e-f23b-4108-9ad7-2c27088d21ce (old id 3191215)
date added to LUP
2016-04-01 14:41:20
date last changed
2023-09-03 17:57:13
@article{fcff360e-f23b-4108-9ad7-2c27088d21ce,
  abstract     = {{Time-resolved terahertz spectroscopy was employed for the investigation of charge-transport dynamics in benzothiadiazolo-dithiophene polyfluorene ([2,7-(9,9-dioctylfluorene)-alt-S,S-(4',7'-di-2-thieny1-2',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 photo-excitation, 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, Carlito and Nemec, Hynek and Vukmirovic, Nenad and Fusco, Sandra and Wang, Ergang and Andersson, Mats R. and Chabera, Pavel and Yartsev, Arkady and Sundström, Villy}},
  issn         = {{1948-7185}},
  language     = {{eng}},
  number       = {{17}},
  pages        = {{2442--2446}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{The Journal of Physical Chemistry Letters}},
  title        = {{Electron and Hole Contributions to the Terahertz Photoconductivity of a Conjugated Polymer:Fullerene Blend Identified}},
  url          = {{http://dx.doi.org/10.1021/jz301013u}},
  doi          = {{10.1021/jz301013u}},
  volume       = {{3}},
  year         = {{2012}},
}