Ultrafast light-induced charge pair formation dynamics in poly[3-(2 '-methoxy-5 ' octylphenyl)thiophene]
Zausjitsyn, Yuri LU ; Gulbinas, V ; Zigmantas, Donatas LU
; Zhang, F L
; Inganas, O
; Sundström, Villy
LU
and Yartsev, Arkady
LU
(2004)
In Physical Review B (Condensed Matter and Materials Physics)
70(7).
p.1-075202
- Abstract
- Charge pair photogeneration was investigated by ultrafast absorption spectroscopy for different excitation photon energies in poly[3-(2(')-methoxy-5(')octylphenyl)thiophene] (POMeOPT) film with and without an external electric field. Electric field-assisted charge pair photogeneration in POMeOPT occurs from vibrationally relaxed singlet excitons during their entire lifetime and charge pair formation takes place in this manner even in the absence of an external electric field. From our data there are no indications of hot exciton dissociation to charge pairs even when a large amount of excess energy is supplied to the excitons. To explain these observations we present a model with energy transfer to low-barrier dissociation sites as a key... (More)
- Charge pair photogeneration was investigated by ultrafast absorption spectroscopy for different excitation photon energies in poly[3-(2(')-methoxy-5(')octylphenyl)thiophene] (POMeOPT) film with and without an external electric field. Electric field-assisted charge pair photogeneration in POMeOPT occurs from vibrationally relaxed singlet excitons during their entire lifetime and charge pair formation takes place in this manner even in the absence of an external electric field. From our data there are no indications of hot exciton dissociation to charge pairs even when a large amount of excess energy is supplied to the excitons. To explain these observations we present a model with energy transfer to low-barrier dissociation sites as a key feature. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/138947
- author
- Zausjitsyn, Yuri
LU
; Gulbinas, V
; Zigmantas, Donatas
LU
; Zhang, F L
; Inganas, O
; Sundström, Villy
LU
and Yartsev, Arkady
LU
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 70
- issue
- 7
- pages
- 1 - 075202
- publisher
- American Physical Society
- external identifiers
-
- wos:000223716600044
- scopus:19544368971
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.70.075202
- 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
- 25e626f5-66df-46c8-9f9b-df239674eb85 (old id 138947)
- date added to LUP
- 2016-04-01 15:48:37
- date last changed
- 2022-01-28 07:16:49
@article{25e626f5-66df-46c8-9f9b-df239674eb85,
abstract = {{Charge pair photogeneration was investigated by ultrafast absorption spectroscopy for different excitation photon energies in poly[3-(2(')-methoxy-5(')octylphenyl)thiophene] (POMeOPT) film with and without an external electric field. Electric field-assisted charge pair photogeneration in POMeOPT occurs from vibrationally relaxed singlet excitons during their entire lifetime and charge pair formation takes place in this manner even in the absence of an external electric field. From our data there are no indications of hot exciton dissociation to charge pairs even when a large amount of excess energy is supplied to the excitons. To explain these observations we present a model with energy transfer to low-barrier dissociation sites as a key feature.}},
author = {{Zausjitsyn, Yuri and Gulbinas, V and Zigmantas, Donatas and Zhang, F L and Inganas, O and Sundström, Villy and Yartsev, Arkady}},
issn = {{1098-0121}},
language = {{eng}},
number = {{7}},
pages = {{1--075202}},
publisher = {{American Physical Society}},
series = {{Physical Review B (Condensed Matter and Materials Physics)}},
title = {{Ultrafast light-induced charge pair formation dynamics in poly[3-(2 '-methoxy-5 ' octylphenyl)thiophene]}},
url = {{http://dx.doi.org/10.1103/PhysRevB.70.075202}},
doi = {{10.1103/PhysRevB.70.075202}},
volume = {{70}},
year = {{2004}},
}