| 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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Pauporté, Thierry
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024A dual strategy to enhance the photoelectric performance of Perovskite-Based photodetectors for potential applications in optical communicationscitations
- 2023Unveiling of a puzzling dual ionic migration in lead‐ and iodide‐deficient halide perovskites (d‐HPs) and its impact on solar cell J–V curve hysteresiscitations
- 2023New Dication-Based Lead-Deficient 3D MAPbI 3 and FAPbI 3 “d-HPs” Perovskites with Enhanced Stabilitycitations
- 2022Control of perovskite film crystallization and growth direction to target homogeneous monolithic structurescitations
- 2021Lead-Less Halide Perovskite Solar Cellscitations
- 2020Carbazole Electroactive Amorphous Molecular Material: Molecular Design, Synthesis, Characterization and Application in Perovskite Solar Cellscitations
- 2019Low-Temperature Solution Synthesis of Au-Modified ZnO Nanowires for Highly Efficient Hydrogen Nanosensorscitations
- 2016Silver-doped zinc oxide single nanowire multifunctional nanosensor with a significant enhancement in responsecitations
- 2005Properties of zirconia thin layers elaborated by high voltage anodisation in view of SOFC applicationcitations
- 2004Structural Changes in Electrochromic WO 3 Thin Films Induced by the first Electrochemical Cyclescitations
- 2003Structural Changes in Electrochromic WO 3 Thin Films Induced by the first Electrochemical Cyclescitations
- 2003XAS Study of Amorphous WO 3 Formation from a Peroxo-Tungstate Solutioncitations
- 2003XAS Study of Amorphous WO<sub>3</sub> Formation from a Peroxo-Tungstate Solutioncitations
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article
Low-Temperature Solution Synthesis of Au-Modified ZnO Nanowires for Highly Efficient Hydrogen Nanosensors
Abstract
In this research, the lowerature single-step electrochemical deposition of arrayed ZnO nanowires (NWs) decorated by Au nanoparticles (NPs) with diameters ranging between 10 and 100 nm is successfully demonstrated for the first time. The AuNPs and ZnO NWs were grown simultaneously in the same growth solution in consideration of the HAuCl4 concentration. Optical, structural, and chemical characterizations were analyzed in detail, proving high crystallinity of the NWs as well as the distribution of Au NPs on the surface of zinc oxide NWs demonstrated by transmission electron microscopy. Individual Au NPs-functionalized ZnO NWs (Au-NP/ZnO-NWs) were incorporated into sensor nanodevices using an focused ion bean/scanning electron microscopy (FIB/SEM) scientific instrument. The gas-sensing investigations demonstrated excellent selectivity to hydrogen gas at room temperature (RT) with a gas response, Igas/Iair, as high as 7.5-100 ppm for Au-NP/ZnO-NWs, possessing a AuNP surface coverage of â¼6.4%. The concentration of HAuCl4 in the electrochemical solution was observed to have no significant impact on the gas-sensing parameters in our experiments. This highlights the significant influence of the total Au/ZnO interfacial area establishing Schottky contacts for the achievement of high performances. The most significant performance of H2 response was observed for gas concentrations higher than 500 ppm of H2 in the environment, which was attributed to the surface metallization of ZnO NWs during exposure to hydrogen. For this case, an ultrahigh response of about 32.9 and 47 to 1000 and 5000 ppm of H2 was obtained, respectively. Spin-polarized periodic density functional theory calculations were realized on Au/ZnO bulk and surface-functionalized models, validating the experimental hypothesis. The combination of H2 gas detection at RT, ultralow power consumption, and reduced dimensions makes these micro-nanodevices excellent candidates for hydrogen gas leakage detection, including hydrogen gas monitoring (less than 1 ppm).