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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Paven-Thivet, Claire Le
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Topics
Publications (9/9 displayed)
- 2014Miniaturized notch antenna based on lanthanum titanium perovskite oxide thin filmscitations
- 2014Lanthanum titanium perovskite compound: Thin film deposition and high frequency dielectric characterizationcitations
- 2013Influence of the sputtering reactive gas on the oxide and oxynitride LaTiON deposition by RF magnetron sputteringcitations
- 2012Dielectric oxynitride LaTiO<sub>x</sub>N<sub>y</sub> thin films deposited by reactive radio-frequency sputteringcitations
- 2011Perovskite oxynitride LaTiOxNy thin films : Dielectric characterization in low and high frequenciescitations
- 2010Oxynitrides Perovskites Thin Films : Photoelectrochemical Measurement Under Visible Light
- 2009Photoelectrochemical Properties of Crystalline Perovskite Lanthanum Titanium Oxynitride Films under Visible Light.citations
- 2008Structural and dielectric properties of oxynitride perovskite LaTiOxNy thin filmscitations
- 2007Oxynitride perovskite LaTiO<sub>x</sub>N<sub>y</sub> thin films deposited by reactive sputteringcitations
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article
Photoelectrochemical Properties of Crystalline Perovskite Lanthanum Titanium Oxynitride Films under Visible Light.
Abstract
Thin films of the Lanthanum Titanium oxynitride perovskite (LaTiOxNy) synthesized by reactive radio-frequency sputtering on conductive Nb-doped Strontium Titanate (Nb:SrTiO3) substrates are evaluated as photoelectrodes for water splitting reaction under visible light. The films are characterized by x-ray diffraction analysis, energy-dispersive spectroscopy, scanning electron and atomic force microscopy, and ultraviolet-visible spectroscopy. Thin films with polycrystalline, oriented, or epitaxial structures are obtained depending on the substrate temperature and plasma composition. The band-gap energies of the films thus prepared are in the range 2.05 - 2.35 eV. Photoelectrochemical measurements reveal that the photoactivity of these films increases with the quality of film crystallization. The flat-band position of LaTiOxNy is found to change with pH of the reactant solution. Surface modification with colloidal IrO2 is also demonstrated to result in a marked increase in photoactivity, with the modified epitaxial LaTiOxNy film exhibiting a photocurrent density of ca. 70 A cm 2 at +1.0 V vs. Ag/AgCl at pH 4.5 in aqueous Na2SO4 solution under irradiation at visible wavelengths ( > 420 nm).