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Erschienen in: Journal of Materials Science 10/2017

31.01.2017 | Original Paper

Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior

verfasst von: Obrad S. Aleksić, Zorka Ž. Vasiljević, Milica Vujković, Marko Nikolić, Nebojša Labus, Miloljub D. Luković, Maria V. Nikolić

Erschienen in: Journal of Materials Science | Ausgabe 10/2017

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Abstract

Nanostructured Fe2TiO5 thick films were deposited on fluorine-doped tin oxide glass substrate using screen printing technology. Starting hematite and anatase nanopowders were mixed in molar ratios 1:1 and 1:1.5 and calcined in air at 900°C for 2 h to form pseudobrookite, Fe2TiO5. Functional powders and sintered thick films were analyzed by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy and transmission electron microscopy. UV–Vis analysis enabled determination of the band gap. Separation and transfer efficiency of photogenerated charge carriers was confirmed by the photoluminescence and electrochemical impedance spectra. Even though a slightly high onset oxygen evolution potential of photoexcited film electrode samples in NaOH was obtained, photocurrent densities were high, especially in the presence of H2O2 (~12 mA cm−2 at 1.7 V RHE). This work shows promise for practical application due to favorable band positions of pseudobrookite and low-cost screen printing technology.

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Metadaten
Titel
Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior
verfasst von
Obrad S. Aleksić
Zorka Ž. Vasiljević
Milica Vujković
Marko Nikolić
Nebojša Labus
Miloljub D. Luković
Maria V. Nikolić
Publikationsdatum
31.01.2017
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 10/2017
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-017-0830-2

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