| People | Locations | Statistics |
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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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Ali-Löytty, Harri
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (44/44 displayed)
- 2024Corrosion mechanisms of TiO2 photoelectrode coatings in alkaline conditions
- 2024Lattice Engineering via Transition Metal Ions for Boosting Photoluminescence Quantum Yields of Lead-Free Layered Double Perovskite Nanocrystalscitations
- 2024Lattice Engineering via Transition Metal Ions for Boosting Photoluminescence Quantum Yields of Lead-Free Layered Double Perovskite Nanocrystalscitations
- 2024Lattice Engineering via Transition Metal Ions for Boosting Photoluminescence Quantum Yields of Lead-Free Layered Double Perovskite Nanocrystalscitations
- 2024Contactless analysis of surface passivation and charge transfer at the TiO 2-Si interfacecitations
- 2024Contactless analysis of surface passivation and charge transfer at the TiO 2-Si interfacecitations
- 2024Silver nanoparticle coatings with adjustable extinction spectra produced with liquid flame spray, and their role in photocatalytic enhancement of TiO2
- 2024Halide Engineering in Mixed Halide Perovskite-Inspired Cu2AgBiI6 for Solar Cells with Enhanced Performancecitations
- 2024Contactless analysis of surface passivation and charge transfer at the TiO2-Si interfacecitations
- 2024Ti3+ Self-Doping-Mediated Optimization of TiO2 Photocatalyst Coating Grown by Atomic Layer Depositioncitations
- 2023Water-resistant perovskite-inspired copper/silver pnictohalide nanocrystals for photoelectrochemical water splittingcitations
- 2023Water-resistant perovskite-inspired copper/silver pnictohalide nanocrystals for photoelectrochemical water splittingcitations
- 2023Antimony-Bismuth Alloying : The Key to a Major Boost in the Efficiency of Lead-Free Perovskite-Inspired Photovoltaicscitations
- 2023Triple A-Site Cation Mixing in 2D Perovskite-Inspired Antimony Halide Absorbers for Efficient Indoor Photovoltaicscitations
- 2023Triple A-Site Cation Mixing in 2D Perovskite-Inspired Antimony Halide Absorbers for Efficient Indoor Photovoltaicscitations
- 2023Is Carrier Mobility a Limiting Factor for Charge Transfer in Tio2/Si Devices? A Study by Transient Reflectance Spectroscopycitations
- 2023Antimony-Bismuth Alloyingcitations
- 2022Insights into Tailoring of Atomic Layer Deposition Grown TiO2 as Photoelectrode Coating
- 2022Fractal-like Hierarchical CuO Nano/Microstructures for Large-Surface-to-Volume-Ratio Dip Catalystscitations
- 2022Low-Temperature Route to Direct Amorphous to Rutile Crystallization of TiO2Thin Films Grown by Atomic Layer Depositioncitations
- 2022Plasmonic Ag–Au/TiO2 nanocomposites for photocatalytic applications
- 2022Influence of Photodeposition Sequence on the Photocatalytic Activity of Plasmonic Ag–Au/TiO2 Nanocompositescitations
- 2022Tunable Ti3+-Mediated Charge Carrier Dynamics of Atomic Layer Deposition-Grown Amorphous TiO2citations
- 2021Comparison of the heat-treatment effect on carrier dynamics in TiO2 thin films deposited by different methodscitations
- 2021Copper oxide microtufts on natural fractals for efficient water harvestingcitations
- 2021Visible to near-infrared broadband fluorescence from Ce-doped silica fibercitations
- 2021Interface Engineering of TiO2 Photoelectrode Coatings Grown by Atomic Layer Deposition on Siliconcitations
- 2020Optimization of photogenerated charge carrier lifetimes in ald grown tio2 for photonic applicationscitations
- 2019Defect engineering of atomic layer deposited TiO2 for photocatalytic applications
- 2019Diversity of TiO2: Controlling the molecular and electronic structure of atomic layer deposited black TiO2citations
- 2019Highly efficient charge separation in model Z-scheme TiO2/TiSi2/Si photoanode by micropatterned titanium silicide interlayercitations
- 2018Photo-electrochemical and spectroscopic investigation of ALD grown TiO2
- 2018Fabrication of topographically microstructured titanium silicide interface for advanced photonic applicationscitations
- 2018Role of Oxide Defects in ALD grown TiO2 Coatings on Performance as Photoanode Protection Layer
- 2018Improved Stability of Atomic Layer Deposited Amorphous TiO2 Photoelectrode Coatings by Thermally Induced Oxygen Defectscitations
- 2018The role of (FeCrSi)2(MoNb)-type Laves phase on the formation of Mn-rich protective oxide scale on ferritic stainless steelcitations
- 2017Photo-electrochemical and spectroscopic investigation of ALD grown TiO2
- 2017Improved corrosion properties of hot dip galvanized steel by nanomolecular silane layers as hybrid interface between zinc and top coatingscitations
- 2017Development of Advanced Fe–Cr Alloys for Demanding Applications Utilizing Synchrotron Light Mediated Electron Spectroscopy
- 2017Role of Oxide Defects in ALD grown TiO2 Coatings on Performance as Photoanode Protection Layer
- 2016Grain orientation dependent Nb-Ti microalloying mediated surface segregation on ferritic stainless steelcitations
- 2016Fabrication of topographically microstructured titanium silicide interface for advanced photonic applicationscitations
- 2016Optimizing iron alloy catalyst materials for photoelectrochemical water splitting
- 2013Microalloying Mediated Segregation and Interfacial Oxidation of FeCr Alloys for Solid-Oxide Fuel Cell Applications
Places of action
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article
Tunable Ti3+-Mediated Charge Carrier Dynamics of Atomic Layer Deposition-Grown Amorphous TiO2
Abstract
Amorphous titania (am.-TiO2) has gained wide interest in the field of photocatalysis, thanks to exceptional disorder-mediated optical and electrical properties compared to crystalline TiO2. Here, we study the effects of intrinsic Ti3+ and nitrogen defects in am.-TiO2 thin films via the atomic layer deposition (ALD) chemistry of tetrakis(dimethylamido)titanium(IV) (TDMAT) and H2O precursors at growth temperatures of 100–200 °C. X-ray photoelectron spectroscopy (XPS) and computational analysis allow us to identify structural disorder-induced penta- and heptacoordinated Ti4+ ions (Ti5/7c4+), which are related to the formation of Ti3+ defects in am.-TiO2. The Ti3+-rich ALD-grown am.-TiO2 has stoichiometric composition, which is explained by the formation of interstitial peroxo species with oxygen vacancies. The occupation of Ti3+ 3d in-gap states increases with the ALD growth temperature, inducing both visible-light absorption and electrical conductivity via the polaron hopping mechanism. At 200 °C, the in-gap states become fully occupied extending the lifetime of photoexcited charge carriers from the picosecond to the nanosecond time domain. Nitrogen traces from the TDMAT precursor had no effect on optical properties and only little on charge transfer properties. These results provide insights into the charge transfer properties of ALD-grown am.-TiO2 that are essential to the performance of protective photoelectrode coatings in photoelectrochemical solar fuel reactors. ; Peer reviewed