| 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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Friedrich, Dennis
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Resolving electron and hole transport properties in semiconductor materials by constant light-induced magneto transportcitations
- 2024Unraveling electron dynamics in p‑type indium phosphide (100): a time-resolved two-photon photoemission study
- 2024Integration of Multijunction Absorbers and Catalysts for Efficient Solar‐Driven Artificial Leaf Structures: A Physical and Materials Science Perspectivecitations
- 2024Resolving electron and hole transport properties in semiconductor materials by constant light-induced magneto transport.
- 2022Predicting Solar Cell Performance from Terahertz and Microwave Spectroscopycitations
- 2022Predicting solar cell performance from terahertz and microwave spectroscopycitations
- 2020Grain Boundaries Limit the Charge Carrier Transport in Pulsed Laser Deposited α-SnWO4 Thin Film Photoabsorberscitations
- 2018Charge carrier lifetimes in Cr-Fe-Al-O thin filmscitations
- 2018Formation and suppression of defects during heat treatment of BiVO4 photoanodes for solar water splittingcitations
- 2017Enhancing Charge Carrier Lifetime in Metal Oxide Photoelectrodes through Mild Hydrogen Treatmentcitations
- 2016Comprehensive Evaluation of CuBi2O4 as a Photocathode Material for Photoelectrochemical Water Splittingcitations
Places of action
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article
Enhancing Charge Carrier Lifetime in Metal Oxide Photoelectrodes through Mild Hydrogen Treatment
Abstract
Widespread application of solar water splitting for energy conversion is largely dependent on the progress in developing not only efficient but also cheap and scalable photoelectrodes. Metal oxides, which can be deposited with scalable techniques and are relatively cheap, are particularly interesting, but high efficiency is still hindered by the poor carrier transport properties (i.e., carrier mobility and lifetime). Here, a mild hydrogen treatment is introduced to bismuth vanadate (BiVO<sub>4</sub>), which is one of the most promising metal oxide photoelectrodes, as a method to overcome the carrier transport limitations. Time-resolved microwave and terahertz conductivity measurements reveal more than twofold enhancement of the carrier lifetime for the hydrogen-treated BiVO<sub>4</sub>, without significantly affecting the carrier mobility. This is in contrast to the case of tungsten-doped BiVO<sub>4</sub>, although hydrogen is also a donor type dopant in BiVO<sub>4</sub>. The enhancement in carrier lifetime is found to be caused by significant reduction of trap-assisted recombination, either via passivation or reduction of deep trap states related to vanadium antisite on bismuth or vanadium interstitials according to density functional theory calculations. Overall, these findings provide further insights on the interplay between defect modulation and carrier transport in metal oxides, which benefit the development of low-cost, highly-efficient solar energy conversion devices. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim