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Time-resolved photoluminescence spectroscopy of charge transfer states in blends of pentacene and perfluoropentacene

Broch, K. ; Gerhard, M. LU ; Halbich, M. ; Lippert, S. ; Belova, V. ; Koch, M. and Schreiber, F. (2017) In Physica Status Solidi - Rapid Research Letters 11(7).
Abstract

Charge transfer states in blends of organic semiconductors have significant importance for the functioning of organic optoelectronic devices, but are also interesting from the perspective of fundamental research as many of their properties as well as their influence on the photophysics of the material are not yet completely understood. We report on a time-resolved photoluminescence study of the photophysics of the charge transfer state in the prototypical donor–acceptor system pentacene mixed with its perfluorinated counterpart. We find indications for the existence of two distinct charge-transfer states, one of them formed in the bulk of the mixed phase, the other one formed at the interface to phase-separated pentacene domains. We... (More)

Charge transfer states in blends of organic semiconductors have significant importance for the functioning of organic optoelectronic devices, but are also interesting from the perspective of fundamental research as many of their properties as well as their influence on the photophysics of the material are not yet completely understood. We report on a time-resolved photoluminescence study of the photophysics of the charge transfer state in the prototypical donor–acceptor system pentacene mixed with its perfluorinated counterpart. We find indications for the existence of two distinct charge-transfer states, one of them formed in the bulk of the mixed phase, the other one formed at the interface to phase-separated pentacene domains. We discuss the implications of the difference in temperature dependence of the emission intensity and the lifetime observed for these charge transfer states.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
charge transfer, organic semiconductors, time-resolved photoluminescence spectroscopy
in
Physica Status Solidi - Rapid Research Letters
volume
11
issue
7
article number
1700064
publisher
John Wiley & Sons Inc.
external identifiers
  • scopus:85021261367
ISSN
1862-6254
DOI
10.1002/pssr.201700064
language
English
LU publication?
yes
id
0d42bf57-f776-4b4e-8678-9d75e5e244d1
date added to LUP
2022-03-28 14:03:31
date last changed
2022-04-20 23:14:29
@article{0d42bf57-f776-4b4e-8678-9d75e5e244d1,
  abstract     = {{<p>Charge transfer states in blends of organic semiconductors have significant importance for the functioning of organic optoelectronic devices, but are also interesting from the perspective of fundamental research as many of their properties as well as their influence on the photophysics of the material are not yet completely understood. We report on a time-resolved photoluminescence study of the photophysics of the charge transfer state in the prototypical donor–acceptor system pentacene mixed with its perfluorinated counterpart. We find indications for the existence of two distinct charge-transfer states, one of them formed in the bulk of the mixed phase, the other one formed at the interface to phase-separated pentacene domains. We discuss the implications of the difference in temperature dependence of the emission intensity and the lifetime observed for these charge transfer states.</p>}},
  author       = {{Broch, K. and Gerhard, M. and Halbich, M. and Lippert, S. and Belova, V. and Koch, M. and Schreiber, F.}},
  issn         = {{1862-6254}},
  keywords     = {{charge transfer; organic semiconductors; time-resolved photoluminescence spectroscopy}},
  language     = {{eng}},
  number       = {{7}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Physica Status Solidi - Rapid Research Letters}},
  title        = {{Time-resolved photoluminescence spectroscopy of charge transfer states in blends of pentacene and perfluoropentacene}},
  url          = {{http://dx.doi.org/10.1002/pssr.201700064}},
  doi          = {{10.1002/pssr.201700064}},
  volume       = {{11}},
  year         = {{2017}},
}