A study of electron transfer in Ru(dcbpy)(2)(NCS)(2) sensitized nanocrystalline TiO2 and SnO2 films induced by red-wing excitation
Myllyperkio, Pasi LU ; Benko, Gabor LU ; Korppi-Tommola, Jouko ; Yartsev, Arkady LU
and Sundström, Villy
LU
(2008)
In Physical Chemistry Chemical Physics
10(7).
p.996-1002
- Abstract
- Excited state dynamics and electron transfer from the Ru(dcbpy)(2)(NCS)(2) (RuN3) sensitizer to semiconductor nanoparticles were studied using time-resolved femtosecond absorption spectroscopy. We found that excitation of the red wing of the absorption spectrum of the sensitizer populates the (MLCT)-M-3 state directly, both in solution and attached on semiconductor nanoparticle films. Electron injection is slowed down and becomes gradually less efficient as excitation moves towards red from the absorption maximum at 535 nm. At 675 nm the injection is non-exponential and characterized by 5, 30 and 180 ps time constants. The non-exponential electron injection observed is assigned to injection from a distribution of triplet states with... (More)
- Excited state dynamics and electron transfer from the Ru(dcbpy)(2)(NCS)(2) (RuN3) sensitizer to semiconductor nanoparticles were studied using time-resolved femtosecond absorption spectroscopy. We found that excitation of the red wing of the absorption spectrum of the sensitizer populates the (MLCT)-M-3 state directly, both in solution and attached on semiconductor nanoparticle films. Electron injection is slowed down and becomes gradually less efficient as excitation moves towards red from the absorption maximum at 535 nm. At 675 nm the injection is non-exponential and characterized by 5, 30 and 180 ps time constants. The non-exponential electron injection observed is assigned to injection from a distribution of triplet states with energies below the semiconductor conduction band edge. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1198538
- author
- Myllyperkio, Pasi
LU
; Benko, Gabor
LU
; Korppi-Tommola, Jouko
; Yartsev, Arkady
LU
and Sundström, Villy
LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Chemistry Chemical Physics
- volume
- 10
- issue
- 7
- pages
- 996 - 1002
- publisher
- Royal Society of Chemistry
- external identifiers
-
- wos:000253013800009
- scopus:38949214684
- pmid:18259639
- ISSN
- 1463-9084
- DOI
- 10.1039/b713515g
- 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), Department of Chemistry (011001220)
- id
- 1bc13bd4-849c-4880-90fd-7f16fa2ac219 (old id 1198538)
- date added to LUP
- 2016-04-01 13:48:34
- date last changed
- 2022-01-27 21:10:37
@article{1bc13bd4-849c-4880-90fd-7f16fa2ac219,
abstract = {{Excited state dynamics and electron transfer from the Ru(dcbpy)(2)(NCS)(2) (RuN3) sensitizer to semiconductor nanoparticles were studied using time-resolved femtosecond absorption spectroscopy. We found that excitation of the red wing of the absorption spectrum of the sensitizer populates the (MLCT)-M-3 state directly, both in solution and attached on semiconductor nanoparticle films. Electron injection is slowed down and becomes gradually less efficient as excitation moves towards red from the absorption maximum at 535 nm. At 675 nm the injection is non-exponential and characterized by 5, 30 and 180 ps time constants. The non-exponential electron injection observed is assigned to injection from a distribution of triplet states with energies below the semiconductor conduction band edge.}},
author = {{Myllyperkio, Pasi and Benko, Gabor and Korppi-Tommola, Jouko and Yartsev, Arkady and Sundström, Villy}},
issn = {{1463-9084}},
language = {{eng}},
number = {{7}},
pages = {{996--1002}},
publisher = {{Royal Society of Chemistry}},
series = {{Physical Chemistry Chemical Physics}},
title = {{A study of electron transfer in Ru(dcbpy)(2)(NCS)(2) sensitized nanocrystalline TiO2 and SnO2 films induced by red-wing excitation}},
url = {{http://dx.doi.org/10.1039/b713515g}},
doi = {{10.1039/b713515g}},
volume = {{10}},
year = {{2008}},
}