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Evidence for surface dipole modifications in In2O3-based transparent conductors

Harvey, S. P. and Mason, T. O. and Körber, C. and Gassenbauer, Y. and Klein, Andreas (2008):
Evidence for surface dipole modifications in In2O3-based transparent conductors.
In: Applied Physics Letters, pp. 252106-1, 92, (25), ISSN 00036951,
[Online-Edition: http://dx.doi.org/10.1063/1.2953435],
[Article]

Abstract

Surface dipole modifications were identified for contamination-free In2O3-based transparent conducting oxides by ultraviolet photoelectron spectroscopy on both thin film and bulk ceramic specimens. In particular, heating in air was found to result in an increase in ionization potential and work function. The formation of surface dipoles may be related to the unique structure (crystal, defect) of bixbyite-based materials. These findings have important ramifications for the tuning of work functions in In2O3-based transparent conductors.

Item Type: Article
Erschienen: 2008
Creators: Harvey, S. P. and Mason, T. O. and Körber, C. and Gassenbauer, Y. and Klein, Andreas
Title: Evidence for surface dipole modifications in In2O3-based transparent conductors
Language: English
Abstract:

Surface dipole modifications were identified for contamination-free In2O3-based transparent conducting oxides by ultraviolet photoelectron spectroscopy on both thin film and bulk ceramic specimens. In particular, heating in air was found to result in an increase in ionization potential and work function. The formation of surface dipoles may be related to the unique structure (crystal, defect) of bixbyite-based materials. These findings have important ramifications for the tuning of work functions in In2O3-based transparent conductors.

Journal or Publication Title: Applied Physics Letters
Volume: 92
Number: 25
Uncontrolled Keywords: ceramics, indium compounds, ionisation, thin films, transparency, ultraviolet photoelectron spectra, work function
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Surface Science
DFG-Collaborative Research Centres (incl. Transregio)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > D - Component properties
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > D - Component properties > Subproject D3: Function and fatigue of oxide electrodes in organic light emitting diodes
Date Deposited: 16 Sep 2011 12:42
Official URL: http://dx.doi.org/10.1063/1.2953435
Additional Information:

SFB 595 D3

Identification Number: doi:10.1063/1.2953435
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