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Unified Study of Recombination in Polymer:Fullerene Solar Cells Using Transient Absorption and Charge-Extraction Measurements

Andersson, Mattias LU ; Melianas, Armantas ; Infahsaeng, Yingyot LU ; Tang, Zheng ; Yartsev, Arkady LU ; Inganas, Olle and Sundström, Villy LU (2013) In The Journal of Physical Chemistry Letters 4(12). p.2069-2072
Abstract
Recombination in the well-performing bulk heterojunction solar cell blend between the conjugated polymer TQ-1 and the substituted fullerene PCBM has been investigated with pump-probe transient absorption and charge extraction of photo-generated carriers (photo-CELIV). Both methods are shown to generate identical and overlapping data under appropriate experimental conditions. The dominant type of recombination is bimolecular with a rate constant of 7 x 10(-12) cm(-3) s(-1). This recombination rate is shown to be fully consistent with solar cell performance. Deviations from an ideal bimolecular recombination process, in this material system only observable at high pump fluences, are explained with a time-dependent charge-carrier mobility,... (More)
Recombination in the well-performing bulk heterojunction solar cell blend between the conjugated polymer TQ-1 and the substituted fullerene PCBM has been investigated with pump-probe transient absorption and charge extraction of photo-generated carriers (photo-CELIV). Both methods are shown to generate identical and overlapping data under appropriate experimental conditions. The dominant type of recombination is bimolecular with a rate constant of 7 x 10(-12) cm(-3) s(-1). This recombination rate is shown to be fully consistent with solar cell performance. Deviations from an ideal bimolecular recombination process, in this material system only observable at high pump fluences, are explained with a time-dependent charge-carrier mobility, and the implications of such a behavior for device development are discussed. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
The Journal of Physical Chemistry Letters
volume
4
issue
12
pages
2069 - 2072
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000320979400014
  • pmid:26283254
  • scopus:84879744948
  • pmid:26283254
ISSN
1948-7185
DOI
10.1021/jz4009745
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
bc1c5a6e-0e81-4029-bd87-c08b870af3ea (old id 3979071)
date added to LUP
2016-04-01 13:03:04
date last changed
2020-01-12 10:54:29
@article{bc1c5a6e-0e81-4029-bd87-c08b870af3ea,
  abstract     = {Recombination in the well-performing bulk heterojunction solar cell blend between the conjugated polymer TQ-1 and the substituted fullerene PCBM has been investigated with pump-probe transient absorption and charge extraction of photo-generated carriers (photo-CELIV). Both methods are shown to generate identical and overlapping data under appropriate experimental conditions. The dominant type of recombination is bimolecular with a rate constant of 7 x 10(-12) cm(-3) s(-1). This recombination rate is shown to be fully consistent with solar cell performance. Deviations from an ideal bimolecular recombination process, in this material system only observable at high pump fluences, are explained with a time-dependent charge-carrier mobility, and the implications of such a behavior for device development are discussed.},
  author       = {Andersson, Mattias and Melianas, Armantas and Infahsaeng, Yingyot and Tang, Zheng and Yartsev, Arkady and Inganas, Olle and Sundström, Villy},
  issn         = {1948-7185},
  language     = {eng},
  number       = {12},
  pages        = {2069--2072},
  publisher    = {The American Chemical Society (ACS)},
  series       = {The Journal of Physical Chemistry Letters},
  title        = {Unified Study of Recombination in Polymer:Fullerene Solar Cells Using Transient Absorption and Charge-Extraction Measurements},
  url          = {http://dx.doi.org/10.1021/jz4009745},
  doi          = {10.1021/jz4009745},
  volume       = {4},
  year         = {2013},
}