Ultra-fast charge transfer in organic electronic materials and at hybrid interfaces studied using the core-hole clock technique

R. Friedlein, S. Braun, Machiel Pieter de Jong, W. Osikowicz, M. Fahlman, W.R. Salaneck

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)

Abstract

The focus of this brief review is the use of resonant photoemission in its “core-hole clock‿ expression for the study of two important problems relevant for the field of organic electronics: the dynamical charge transfer across hybrid organic–inorganic interfaces, and the intermolecular charge transfer in the bulk of organic thin films. Following an outline of the technique, a discussion of its applicability and a short overview of experimental results obtained thus far, two examples are used to illustrate particular results relevant for the understanding of the charge transport in organic electronic devices. First, for Fe(II)-tetraphenylporphyrin molecules on semi-metallic molybdenum disulfide substrates, the electronic coupling to the substrate and the efficiency of charge transport across the interface different for the individual molecular electronic subsystems is discussed. And second, a discotic liquid crystalline material forming columnar assemblies is used to illustrate ultra-fast intermolecular charge transfer on the order of a few femtoseconds indicating an electronic coupling between the phthalocyanine units stronger than expected from the macroscopic charge transport characteristics of the material
Original languageUndefined
Pages (from-to)101-106
Number of pages6
JournalJournal of electron spectroscopy and related phenomena
Volume183
Issue number1-3
DOIs
Publication statusPublished - Jan 2011

Keywords

  • EWI-21086
  • Photoelectron Spectroscopy
  • Organic electronics
  • IR-79223
  • Core-hole-clock
  • METIS-284940
  • Interfaces

Cite this

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title = "Ultra-fast charge transfer in organic electronic materials and at hybrid interfaces studied using the core-hole clock technique",
abstract = "The focus of this brief review is the use of resonant photoemission in its “core-hole clock‿ expression for the study of two important problems relevant for the field of organic electronics: the dynamical charge transfer across hybrid organic–inorganic interfaces, and the intermolecular charge transfer in the bulk of organic thin films. Following an outline of the technique, a discussion of its applicability and a short overview of experimental results obtained thus far, two examples are used to illustrate particular results relevant for the understanding of the charge transport in organic electronic devices. First, for Fe(II)-tetraphenylporphyrin molecules on semi-metallic molybdenum disulfide substrates, the electronic coupling to the substrate and the efficiency of charge transport across the interface different for the individual molecular electronic subsystems is discussed. And second, a discotic liquid crystalline material forming columnar assemblies is used to illustrate ultra-fast intermolecular charge transfer on the order of a few femtoseconds indicating an electronic coupling between the phthalocyanine units stronger than expected from the macroscopic charge transport characteristics of the material",
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author = "R. Friedlein and S. Braun and {de Jong}, {Machiel Pieter} and W. Osikowicz and M. Fahlman and W.R. Salaneck",
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Ultra-fast charge transfer in organic electronic materials and at hybrid interfaces studied using the core-hole clock technique. / Friedlein, R.; Braun, S.; de Jong, Machiel Pieter; Osikowicz, W.; Fahlman, M.; Salaneck, W.R.

In: Journal of electron spectroscopy and related phenomena, Vol. 183, No. 1-3, 01.2011, p. 101-106.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Ultra-fast charge transfer in organic electronic materials and at hybrid interfaces studied using the core-hole clock technique

AU - Friedlein, R.

AU - Braun, S.

AU - de Jong, Machiel Pieter

AU - Osikowicz, W.

AU - Fahlman, M.

AU - Salaneck, W.R.

N1 - 10.1016/j.elspec.2010.11.001

PY - 2011/1

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N2 - The focus of this brief review is the use of resonant photoemission in its “core-hole clock‿ expression for the study of two important problems relevant for the field of organic electronics: the dynamical charge transfer across hybrid organic–inorganic interfaces, and the intermolecular charge transfer in the bulk of organic thin films. Following an outline of the technique, a discussion of its applicability and a short overview of experimental results obtained thus far, two examples are used to illustrate particular results relevant for the understanding of the charge transport in organic electronic devices. First, for Fe(II)-tetraphenylporphyrin molecules on semi-metallic molybdenum disulfide substrates, the electronic coupling to the substrate and the efficiency of charge transport across the interface different for the individual molecular electronic subsystems is discussed. And second, a discotic liquid crystalline material forming columnar assemblies is used to illustrate ultra-fast intermolecular charge transfer on the order of a few femtoseconds indicating an electronic coupling between the phthalocyanine units stronger than expected from the macroscopic charge transport characteristics of the material

AB - The focus of this brief review is the use of resonant photoemission in its “core-hole clock‿ expression for the study of two important problems relevant for the field of organic electronics: the dynamical charge transfer across hybrid organic–inorganic interfaces, and the intermolecular charge transfer in the bulk of organic thin films. Following an outline of the technique, a discussion of its applicability and a short overview of experimental results obtained thus far, two examples are used to illustrate particular results relevant for the understanding of the charge transport in organic electronic devices. First, for Fe(II)-tetraphenylporphyrin molecules on semi-metallic molybdenum disulfide substrates, the electronic coupling to the substrate and the efficiency of charge transport across the interface different for the individual molecular electronic subsystems is discussed. And second, a discotic liquid crystalline material forming columnar assemblies is used to illustrate ultra-fast intermolecular charge transfer on the order of a few femtoseconds indicating an electronic coupling between the phthalocyanine units stronger than expected from the macroscopic charge transport characteristics of the material

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KW - METIS-284940

KW - Interfaces

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