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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 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.
Please use this url to cite or link to this publication:
author
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
external identifiers
  • wos:000308342500025
  • scopus:84865985528
ISSN
1948-7185
DOI
10.1021/jz301013u
language
English
LU publication?
yes
id
fcff360e-f23b-4108-9ad7-2c27088d21ce (old id 3191215)
date added to LUP
2012-12-03 15:56:08
date last changed
2017-09-24 04:11:20
@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},
  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},
  volume       = {3},
  year         = {2012},
}