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Charge transfer dynamics in molecular solids and adsorbates driven by local and non-local excitations

Foehlisch, A.; Vijayalakshmi, S.; Pietzsch, A.; Nagasono, M.; Wurth, W.; Kirchmann, P. S.; Loukakos, P. A.; Bovensiepen, U.; Wolf, M. and Tchaplyguine, Maxim LU , et al. (2012) In Surface Science 606(11-12). p.881-885
Abstract
Charge transfer pathways and charge transfer times in molecular films and in adsorbate layers depend both on the details of the electronic structure as well as on the degree of the initial localization of the propagating excited electronic state. For C6F6 molecular adsorbate films on the Cu(111) surface we determined the interplay between excited state localization and charge transfer pathways. In particular we selectively prepared a free-particle-like LUMO band excitation and compared it to a molecularly localized core-excited C1s -> pi* C6F6 LUMO state using time-resolved two-photon photoemission (tr-2PPE) and core-sole-clock (CHC) spectroscopy, respectively. For the molecularly localized core-excited C1s -> pi* C6F6 LUMO state, we... (More)
Charge transfer pathways and charge transfer times in molecular films and in adsorbate layers depend both on the details of the electronic structure as well as on the degree of the initial localization of the propagating excited electronic state. For C6F6 molecular adsorbate films on the Cu(111) surface we determined the interplay between excited state localization and charge transfer pathways. In particular we selectively prepared a free-particle-like LUMO band excitation and compared it to a molecularly localized core-excited C1s -> pi* C6F6 LUMO state using time-resolved two-photon photoemission (tr-2PPE) and core-sole-clock (CHC) spectroscopy, respectively. For the molecularly localized core-excited C1s -> pi* C6F6 LUMO state, we separate the intramolecular dynamics from the charge transfer dynamics to the metal substrate by taking the intramolecular dynamics of the free C6F6 molecule into account Our analysis yields a generally applicable description of charge transfer within molecular adsorbates and to the substrate. (C) 2011 Published by Elsevier B.V. (Less)
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keywords
Hexafluorobenzene, Charge transfer dynamics, Cu(111), Core-hole-clock, Two-photon photoemission, Autoionization, Photoelectron spectroscopy, C1s NEXAFS
in
Surface Science
volume
606
issue
11-12
pages
881 - 885
publisher
Elsevier
external identifiers
  • wos:000302972000001
  • scopus:84859160335
ISSN
0039-6028
DOI
10.1016/j.susc.2011.12.014
language
English
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yes
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ed81ff2a-b83f-4949-bc3c-e38bff77189c (old id 2570839)
date added to LUP
2012-06-04 09:55:32
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2017-01-01 05:38:51
@article{ed81ff2a-b83f-4949-bc3c-e38bff77189c,
  abstract     = {Charge transfer pathways and charge transfer times in molecular films and in adsorbate layers depend both on the details of the electronic structure as well as on the degree of the initial localization of the propagating excited electronic state. For C6F6 molecular adsorbate films on the Cu(111) surface we determined the interplay between excited state localization and charge transfer pathways. In particular we selectively prepared a free-particle-like LUMO band excitation and compared it to a molecularly localized core-excited C1s -> pi* C6F6 LUMO state using time-resolved two-photon photoemission (tr-2PPE) and core-sole-clock (CHC) spectroscopy, respectively. For the molecularly localized core-excited C1s -> pi* C6F6 LUMO state, we separate the intramolecular dynamics from the charge transfer dynamics to the metal substrate by taking the intramolecular dynamics of the free C6F6 molecule into account Our analysis yields a generally applicable description of charge transfer within molecular adsorbates and to the substrate. (C) 2011 Published by Elsevier B.V.},
  author       = {Foehlisch, A. and Vijayalakshmi, S. and Pietzsch, A. and Nagasono, M. and Wurth, W. and Kirchmann, P. S. and Loukakos, P. A. and Bovensiepen, U. and Wolf, M. and Tchaplyguine, Maxim and Hennies, Franz},
  issn         = {0039-6028},
  keyword      = {Hexafluorobenzene,Charge transfer dynamics,Cu(111),Core-hole-clock,Two-photon photoemission,Autoionization,Photoelectron spectroscopy,C1s NEXAFS},
  language     = {eng},
  number       = {11-12},
  pages        = {881--885},
  publisher    = {Elsevier},
  series       = {Surface Science},
  title        = {Charge transfer dynamics in molecular solids and adsorbates driven by local and non-local excitations},
  url          = {http://dx.doi.org/10.1016/j.susc.2011.12.014},
  volume       = {606},
  year         = {2012},
}