Integer charge transfer at the tetrakis(dimethylamino)ethylene/Au interface

L. Lindell; Mikael Unge; W. Osikowicz; S. Stafstrom; W.R. Salaneck; X. Crispin; M.P. de Jong

doi:10.1063/1.2912818

Integer charge transfer at the tetrakis(dimethylamino)ethylene/Au interface

L. Lindell, Mikael Unge, W. Osikowicz, S. Stafstrom, W.R. Salaneck, X. Crispin, M.P. de Jong

Department of Physics

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Abstract

In organic-based electronics, interfacial properties have a profound impact on device performance. The lineup of energy levels is usually dependent on interface dipoles, which may arise from charge transfer reactions. In many applications, metal-organic junctions are prepared under ambient conditions, where direct overlap of the organic pi system from the metal bands is prevented due to presence of oxides and/or hydrocarbons. We present direct experimental and theoretical evidence showing that the interface energetic for such systems is governed by exchange of an integer amount of electrons.

Original language	English
Journal	Applied Physics Letters
Volume	92
Issue number	16
Pages (from-to)	163302
ISSN	0003-6951
DOIs	https://doi.org/10.1063/1.2912818
Publication status	Published - 2008

Bibliographical note

Copyright (2008) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

TRANSPARENT
ORGANIC INTERFACES
ENERGY-LEVEL ALIGNMENT

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AU - Stafstrom, S.

AU - Salaneck, W.R.

AU - Crispin, X.

AU - de Jong, M.P.

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N2 - In organic-based electronics, interfacial properties have a profound impact on device performance. The lineup of energy levels is usually dependent on interface dipoles, which may arise from charge transfer reactions. In many applications, metal-organic junctions are prepared under ambient conditions, where direct overlap of the organic pi system from the metal bands is prevented due to presence of oxides and/or hydrocarbons. We present direct experimental and theoretical evidence showing that the interface energetic for such systems is governed by exchange of an integer amount of electrons.

AB - In organic-based electronics, interfacial properties have a profound impact on device performance. The lineup of energy levels is usually dependent on interface dipoles, which may arise from charge transfer reactions. In many applications, metal-organic junctions are prepared under ambient conditions, where direct overlap of the organic pi system from the metal bands is prevented due to presence of oxides and/or hydrocarbons. We present direct experimental and theoretical evidence showing that the interface energetic for such systems is governed by exchange of an integer amount of electrons.

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KW - ENERGY-LEVEL ALIGNMENT

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Integer charge transfer at the tetrakis(dimethylamino)ethylene/Au interface

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