Evidence for surface dipole modifications in In2O 3-based transparent conductors

S. P. Harvey; T. O. Mason; C. Körber; Y. Gassenbauer; A. Klein

doi:10.1063/1.2953435

Evidence for surface dipole modifications in In₂O ₃-based transparent conductors

S. P. Harvey, T. O. Mason, C. Körber, Y. Gassenbauer, A. Klein

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

Surface dipole modifications were identified for contamination-free In ₂O₃-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.

Original language	English (US)
Article number	252106
Journal	Applied Physics Letters
Volume	92
Issue number	25
DOIs	https://doi.org/10.1063/1.2953435
State	Published - 2008

Funding

This work was supported by the NSF/DFG Materials World Network program under Contract Nos. DMR-0602521 (NSF) and KL-1225/4 (DFG) and by the collaborative research center SFB 595 (DFG).

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.2953435

Cite this

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title = "Evidence for surface dipole modifications in In2O 3-based transparent conductors",

abstract = "Surface dipole modifications were identified for contamination-free In 2O3-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.",

author = "Harvey, {S. P.} and Mason, {T. O.} and C. K{\"o}rber and Y. Gassenbauer and A. Klein",

note = "Funding Information: This work was supported by the NSF/DFG Materials World Network program under Contract Nos. DMR-0602521 (NSF) and KL-1225/4 (DFG) and by the collaborative research center SFB 595 (DFG).",

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AU - Harvey, S. P.

AU - Mason, T. O.

AU - Körber, C.

AU - Gassenbauer, Y.

AU - Klein, A.

N1 - Funding Information: This work was supported by the NSF/DFG Materials World Network program under Contract Nos. DMR-0602521 (NSF) and KL-1225/4 (DFG) and by the collaborative research center SFB 595 (DFG).

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N2 - Surface dipole modifications were identified for contamination-free In 2O3-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.

AB - Surface dipole modifications were identified for contamination-free In 2O3-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.

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