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Influence of orbital contributions to the valence band alignment of Bi2O3, Fe2O3, BiFeO3, and Bi0.5Na0.5TiO3

Li, Shunyi ; Morasch, Jan ; Klein, Andreas ; Chirila, Christina ; Pintilie, Lucian ; Jia, Lichao ; Ellmer, Klaus ; Naderer, Michael ; Reichmann, Klaus ; Gröting, Melanie ; Albe, Karsten (2022)
Influence of orbital contributions to the valence band alignment of Bi2O3, Fe2O3, BiFeO3, and Bi0.5Na0.5TiO3.
In: Physical Review B, 2013, 88 (4)
doi: 10.26083/tuprints-00021171
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Influence of orbital contributions to the valence band alignment of Bi2O3, Fe2O3, BiFeO3, and Bi0.5Na0.5TiO3
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2013
Publisher: American Physical Society
Journal or Publication Title: Physical Review B
Volume of the journal: 88
Issue Number: 4
Collation: 12 Seiten
DOI: 10.26083/tuprints-00021171
Corresponding Links:
Origin: Secondary publication service
Abstract:

The formation of an interface between Bi2O3, Fe2O3, BiFeO3, Bi0.5Na0.5TiO3, and the high work function metallic RuO2 is studied using photoelectron spectroscopy with in situ RuO2 deposition. Schottky barrier heights are derived and the valence band maximum energies of the studied materials are aligned with respect to each other as well as to other functional oxides like SrTiO3 and PbTiO3. The energy band alignment follows systematic trends compared to a large number of oxides, and can be understood in terms of the contribution of Fe 3d and Bi 6s/6p (lone pair) orbitals to electronic states near the valence band maximum. The results indicate that the valence band maxima are largely determined by the local environment of the cations, which allows to estimate valence band maximum energies of oxides with multiple cations from those of their parent binary compounds. The high valence band maximum of BiFeO3 is consistent with reported p-type conduction of acceptor doped material, while the high conduction band minimum makes n-type conduction unlikely.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-211717
Classification DDC: 500 Science and mathematics > 530 Physics
600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Electronic Materials
11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
11 Department of Materials and Earth Sciences > Material Science > Surface Science
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > B - Characterisation > Subproject B7: Polarisation and charging in electrical fatigue ferroelectrics
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > C - Modelling > Subproject C1: Quantum mechanical computer simulations for electron and defect structure of oxides
Date Deposited: 20 Apr 2022 12:15
Last Modified: 08 Feb 2023 07:16
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21171
PPN: 504404121
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