| 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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Vasilevskiy, Mikhail
International Iberian Nanotechnology Laboratory
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yieldcitations
- 2023The role of hydrogen incorporation into amorphous carbon films in the change of the secondary electron yieldcitations
- 2021Gas sensors based on localized surface plasmon resonances: synthesis of oxide films with embedded metal nanoparticles, theory and simulation, and sensitivity enhancement strategiescitations
- 2016Ag fractals formed on top of a porous TiO2 thin filmcitations
- 2016Broadband optical absorption caused by plasmonic response of coalesced Au nanoparticles embedded in a TiO2 matrixcitations
- 2015Raman study of insulating and conductive ZnO: (Al, Mn) thin filmscitations
- 2015Effect of clustering on the surface plasmon band in thin films of metallic nanoparticlescitations
- 2015Optical properties of zirconium oxynitride films: the effect of composition, electronic and crystalline structurescitations
- 2015Thin films composed of gold nanoparticles dispersed in a dielectric matrix: the influence of the host matrix on the optical and mechanical responsescitations
- 2014Optical response of fractal aggregates of polarizable particlescitations
- 2011ZnO:Cu thin films and p-n homojunctions grown by electrochemical deposition
- 2011Resonant raman scattering in CdSxSe1-x nanocrystals : effects of phonon confinement, composition and elastic straincitations
- 2011Study of the piezoresistivity of doped nanocrystalline silicon thin filmscitations
- 2003Competition between ferroelectric and semiconductor properties in Pb(Zr0.65Ti0.35)O-3 thin films deposited by sol-gelcitations
- 2002Microstructure and photoluminescence of CdS-doped silica films grown by RF magnetron sputtering
Places of action
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article
The Role of Hydrogen Incorporation into Amorphous Carbon Films in the Change of the Secondary Electron Yield
Abstract
<jats:p>Over the last few years, there has been increasing interest in the use of amorphous carbon thin films with low secondary electron yield (SEY) to mitigate electron multipacting in particle accelerators and RF devices. Previous works found that the SEY increases with the amount of incorporated hydrogen and correlates with the Tauc gap. In this work, we analyse films produced by magnetron sputtering with different contents of hydrogen and deuterium incorporated via the target poisoning and sputtering of CxDy molecules. XPS was implemented to estimate the phase composition of the films. The maximal SEY was found to decrease linearly with the fraction of the graphitic phase in the films. These results are supported by Raman scattering and UPS measurements. The graphitic phase decreases almost linearly for hydrogen and deuterium concentrations between 12% and 46% (at.), but abruptly decreases when the concentration reaches 53%. This vanishing of the graphitic phase is accompanied by a strong increase of SEY and the Tauc gap. These results suggest that the SEY is not dictated directly by the concentration of H/D, but by the fraction of the graphitic phase in the film. The results are supported by an original model used to calculate the SEY of films consisting of a mixture of graphitic and polymeric phases.</jats:p>