Lohaus, Christian ; Steinert, Céline ; Brötz, Joachim ; Klein, Andreas ; Jaegermann, Wolfram (2017)
Systematic Investigation of the Electronic Structure of Hematite Thin Films.
In: Advanced Materials Interfaces, 4 (20)
doi: 10.1002/admi.201700542
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Water photolysis is a key technology to convert solar energy into clean, sustainable fuel. Hematite Fe2O3 thin films are considered as a potential photoanode for this purpose. The performance of hematite‐based devices is limited by charge carrier transport and recombination, which are intimately linked to the electronic structure. Investigations of the electronic structure of hematite by photoemission exhibit pronounced differences in the reported spectra. A combination of structural and spectroscopic characterization methods is used to unravel the relation between the crystalline and the electronic structure of hematite thin films, which provides unique fingerprint spectra for different crystalline states. The combination with valence band DOS calculations from literature allows for an assignment of the contribution of iron and oxygen (hybrid‐) states to the valence band DOS.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Lohaus, Christian ; Steinert, Céline ; Brötz, Joachim ; Klein, Andreas ; Jaegermann, Wolfram |
| Art des Eintrags: | Bibliographie |
| Titel: | Systematic Investigation of the Electronic Structure of Hematite Thin Films |
| Sprache: | Englisch |
| Publikationsjahr: | 23 Oktober 2017 |
| Verlag: | Wiley-VCH Verlag GmbH, Weinheim |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Advanced Materials Interfaces |
| Jahrgang/Volume einer Zeitschrift: | 4 |
| (Heft-)Nummer: | 20 |
| DOI: | 10.1002/admi.201700542 |
| URL / URN: | https://doi.org/10.1002/admi.201700542 |
| Kurzbeschreibung (Abstract): | Water photolysis is a key technology to convert solar energy into clean, sustainable fuel. Hematite Fe2O3 thin films are considered as a potential photoanode for this purpose. The performance of hematite‐based devices is limited by charge carrier transport and recombination, which are intimately linked to the electronic structure. Investigations of the electronic structure of hematite by photoemission exhibit pronounced differences in the reported spectra. A combination of structural and spectroscopic characterization methods is used to unravel the relation between the crystalline and the electronic structure of hematite thin films, which provides unique fingerprint spectra for different crystalline states. The combination with valence band DOS calculations from literature allows for an assignment of the contribution of iron and oxygen (hybrid‐) states to the valence band DOS. |
| Freie Schlagworte: | electronic structure, hematite, multiplet splitting, photoelectron spectroscopy, water splitting |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Strukturforschung |
| Hinterlegungsdatum: | 27 Sep 2017 08:06 |
| Letzte Änderung: | 10 Sep 2020 08:41 |
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