Charge transfer dynamics at model metal-organic solar cell surfaces
(2007) In Journal of Physical Chemistry C 111(44). p.16646-16655- Abstract
- The "core-hole clock" implementation of resonant photoemission has been used to investigate the charge-transfer dynamics of bi-isonicotinic acid molecules (4,4'-dicarboxy-2,2'-bipyridine) adsorbed on a rutile TiO2(110) surface containing varying densities of gold islands. In the presence of, nominally, a few monolayers of gold there exists a strong coupling between the adsorbed molecules and the surface. This is derived from the measurement of a <3 fs charge-transfer time for the injection of a core-excited electron into the substrate. This ultrafast charge-transfer time is quenched for a fraction of the molecules upon the addition of only a few further monolayers of gold. There is evidence to suggest that this effect derives from a... (More)
- The "core-hole clock" implementation of resonant photoemission has been used to investigate the charge-transfer dynamics of bi-isonicotinic acid molecules (4,4'-dicarboxy-2,2'-bipyridine) adsorbed on a rutile TiO2(110) surface containing varying densities of gold islands. In the presence of, nominally, a few monolayers of gold there exists a strong coupling between the adsorbed molecules and the surface. This is derived from the measurement of a <3 fs charge-transfer time for the injection of a core-excited electron into the substrate. This ultrafast charge-transfer time is quenched for a fraction of the molecules upon the addition of only a few further monolayers of gold. There is evidence to suggest that this effect derives from a change in the bonding configuration of bi-isonicotinic acid molecules. However, results also support the occurrence of ultrafast back-transfer from Au states to core-excited unoccupied molecular states. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/630893
- author
- Taylor, John B. ; Mayor, Louise C. ; Swarbrick, Janine C. ; O'Shea, James N. and Schnadt, Joachim LU
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Physical Chemistry C
- volume
- 111
- issue
- 44
- pages
- 16646 - 16655
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000250647000080
- scopus:36348963527
- ISSN
- 1932-7447
- DOI
- 10.1021/jp075366d
- language
- English
- LU publication?
- yes
- id
- 68c586ce-825c-47e3-9da1-0abfafca1a30 (old id 630893)
- date added to LUP
- 2016-04-01 11:56:33
- date last changed
- 2022-03-20 21:11:55
@article{68c586ce-825c-47e3-9da1-0abfafca1a30, abstract = {{The "core-hole clock" implementation of resonant photoemission has been used to investigate the charge-transfer dynamics of bi-isonicotinic acid molecules (4,4'-dicarboxy-2,2'-bipyridine) adsorbed on a rutile TiO2(110) surface containing varying densities of gold islands. In the presence of, nominally, a few monolayers of gold there exists a strong coupling between the adsorbed molecules and the surface. This is derived from the measurement of a <3 fs charge-transfer time for the injection of a core-excited electron into the substrate. This ultrafast charge-transfer time is quenched for a fraction of the molecules upon the addition of only a few further monolayers of gold. There is evidence to suggest that this effect derives from a change in the bonding configuration of bi-isonicotinic acid molecules. However, results also support the occurrence of ultrafast back-transfer from Au states to core-excited unoccupied molecular states.}}, author = {{Taylor, John B. and Mayor, Louise C. and Swarbrick, Janine C. and O'Shea, James N. and Schnadt, Joachim}}, issn = {{1932-7447}}, language = {{eng}}, number = {{44}}, pages = {{16646--16655}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Journal of Physical Chemistry C}}, title = {{Charge transfer dynamics at model metal-organic solar cell surfaces}}, url = {{http://dx.doi.org/10.1021/jp075366d}}, doi = {{10.1021/jp075366d}}, volume = {{111}}, year = {{2007}}, }