| 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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Faupel, Franz
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (46/46 displayed)
- 2024Early-stage silver growth during sputter deposition on SiO2 and polystyrene - Comparison of biased DC magnetron sputtering, high-power impulse magnetron sputtering (HiPIMS) and bipolar HiPIMScitations
- 2024Early-stage silver growth during sputter deposition on SiO$_2$ and polystyrene – Comparison of biased DC magnetron sputtering, high-power impulse magnetron sputtering (HiPIMS) and bipolar HiPIMScitations
- 2024Self‐Modification of Defective TiO<sub>2</sub> under Controlled H<sub>2</sub>/Ar Gas Environment and Dynamics of Photoinduced Surface Oxygen Vacanciescitations
- 2024Influence of Silsesquioxane-Containing Ultra-Thin Polymer Films on Metal Oxide Gas Sensor Performance for the Tunable Detection of Biomarkerscitations
- 2024Co‐sputtering of A Thin Film Broadband Absorber Based on Self‐Organized Plasmonic Cu Nanoparticlescitations
- 2023Two-in-One Sensor Based on PV4D4-Coated TiO 2 Films for Food Spoilage Detection and as a Breath Marker for Several Diseasescitations
- 2023Co‐sputtering of A Thin Film Broadband Absorber Based on Self‐Organized Plasmonic Cu Nanoparticles
- 2023Tuning the Selectivity of Metal Oxide Gas Sensors with Vapor Phase Deposited Ultrathin Polymer Thin Filmscitations
- 2022A thin-film broadband perfect absorber based on plasmonic copper nanoparticlescitations
- 2022In Situ Monitoring of Scale Effects on Phase Selection and Plasmonic Shifts during the Growth of AgCu Alloy Nanostructures for Anticounterfeiting Applicationscitations
- 2022Template-Induced Growth of Sputter-Deposited Gold Nanoparticles on Ordered Porous TiO$_2$ Thin Films for Surface-Enhanced Raman Scattering Sensorscitations
- 2022Sensing performance of CuO/Cu2O/ZnOcitations
- 2021Heterostructure-based devices with enhanced humidity stability for H2 gas sensing applications in breath tests and portable batteries
- 2021Heterostructure-based devices with enhanced humidity stability for H2 gas sensing applications in breath tests and portable batteriescitations
- 2021Selective Silver Nanocluster Metallization on Conjugated Diblock Copolymer Templates for Sensing and Photovoltaic Applicationscitations
- 2021Tuning wettability of TiO 2 thin film by photocatalytic deposition of 3D flower- and hedgehog-like Au nano- and microstructurescitations
- 2021Revealing the growth of copper on polystyrene- block -poly(ethylene oxide) diblock copolymer thin films with in situ GISAXScitations
- 2021Initiated chemical vapor deposition (Icvd) functionalized polylactic acid–marine algae composite patch for bone tissue engineeringcitations
- 2021Initiated chemical vapor deposition (Icvd) functionalized polylactic acid–marine algae composite patch for bone tissue engineeringcitations
- 2021Tuning wettability of TiO2 thin film by photocatalytic deposition of 3D flower- and hedgehog-like Au nano- and microstructurescitations
- 2021Marine algae incorporated polylactide acid patchcitations
- 2021Real-time insight into nanostructure evolution during the rapid formation of ultra-thin gold layers on polymerscitations
- 2020Single CuO/Cu2O/Cu Microwire Covered by a Nanowire Network as a Gas Sensor for the Detection of Battery Hazardscitations
- 2020Facile fabrication of semiconducting oxide nanostructures by direct ink writing of readily available metal microparticles and their application as low power acetone gas sensorscitations
- 2020Following in Situ the Deposition of Gold Electrodes on Low Band Gap Polymer Filmscitations
- 2019Correlating Nanostructure, Optical and Electronic Properties of Nanogranular Silver Layers during Polymer-Template-Assisted Sputter Depositioncitations
- 2019Low-Temperature Solution Synthesis of Au-Modified ZnO Nanowires for Highly Efficient Hydrogen Nanosensorscitations
- 2019The impact of O2/Ar ratio on morphology and functional properties in reactive sputtering of metal oxide thin filmscitations
- 2019Pathways to Tailor Photocatalytic Performance of TiO2 Thin Films Deposited by Reactive Magnetron Sputteringcitations
- 2018Wide Band Low Noise Love Wave Magnetic Field Sensor Systemcitations
- 2018Ultra-thin TiO 2 films by atomic layer deposition and surface functionalization with Au nanodots for sensing applicationscitations
- 2018Plasma based formation and deposition of metal and metal oxide nanoparticles using a gas aggregation sourcecitations
- 2017Localized Synthesis of Iron Oxide Nanowires and Fabrication of High Performance Nanosensors Based on a Single Fe2 O3 Nanowirecitations
- 2017Role of Sputter Deposition Rate in Tailoring Nanogranular Gold Structures on Polymer Surfacescitations
- 2016Non-planar nanoscale p-p heterojunctions formation in ZnxCu1-xOy nanocrystals by mixed phases for enhanced sensorscitations
- 2016Multifunctional device based on ZnOcitations
- 2016Non-planar nanoscale p-p heterojunctions formation in Znx Cu1-x Oy nanocrystals by mixed phases for enhanced sensors
- 2015Real-Time Monitoring of Morphology and Optical Properties during Sputter Deposition for Tailoring Metal–Polymer Interfacescitations
- 2014High-voltage insulation organic-inorganic nanocomposites by plasma polymerizationcitations
- 2012Vapour phase deposition of highly crystalline self-poled piezoelectric nylon-11citations
- 2008Influence of top layer geometries on the electronic properties of pentacene and diindenoperylene thin filmscitations
- 2008Tuning of electrical and structural properties of metal-polymer nanocomposite films prepared by co-evaporation techniquecitations
- 2005Ag-diffusion in the organic semiconductor diindenoperylene
- 2005Radiotracer measurements as a sensitive tool for the detection of metal penetration in molecular-based organic electronicscitations
- 2004Arrays of wirelike microstructures of Ag with visible wavelength transparent plasmonic response at near-ultraviolet and midinfrared regionscitations
- 2004Strain-controlled growth of nanowires within thin-film crackscitations
Places of action
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article
Heterostructure-based devices with enhanced humidity stability for H2 gas sensing applications in breath tests and portable batteries
Abstract
Semiconducting metal oxide - based gas sensors exhibit outstanding sensitivity, although humidity in the analyte typically hampers precise measurements. In this work it was shown that a 5−6 nm thin Al2O3 nano-layer is particularly beneficial in reducing the interference due to humidity of p-type conductivity copper oxide-based gas sensors. An effective approach from chemical solutions at 75 °C and thermal annealing at 600 °C was used to grow copper oxide nano-crystallite layers. The Al2O3 nano-layers were subsequently deposited on top of copper oxide by atomic layer deposition in a high-aspect-ratio regime at 75 °C. The morphological, structural, chemical, vibrational, electronical and sensor characteristics of the heterostructured nano-crystallite layers have been studied. The final nano-Al2O3/CuO heterostructure showed an increase in the response to H2 gas by 140 %, while long-term stability at low and high relative humidity was observed. The initial sensing response varied by only 10 % for an Al2O3 layer of 5−6 nm on top of CuO with a post-thermal annealing at 600 °C acting as an effective barrier for water vapor and oxygen. A comparison with CuO nanocrystallite layers covered by ALD with 6 nm and 15 nm of Al2O3 ultra-thin films on top demonstrates an exceptional stability of the hydrogen gas response at high relative humidity (84 % RH). Density functional theory-based calculations showed that the H2 molecule spontaneously dissociates over the formed Al2O3/CuO heterostructure, interacting strongly with the surface Al atoms, showing different behavior compared to the pristine CuO (111) surface, where H2 gas molecules are known to form water over the surface. The present study demonstrates that a thorough optimization of technology and surface properties due to coverage and formation of heterostructured nano-materials improves the humidity stability during H2 gas sensing applications which is important for real-world applications, e.g. portable battery analysis, H2 breath tests, along with environmental, medicine, security, and food safety diagnostic tests.