Search results for "Films minces"
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Micro/nanostructured thin films : synthesis by ALD of composites associating TiO2 inverse opals and gold nanoparticles for photocatalysis applications
2021
The aim of this work was to improve the photocatalytic properties of titanium dioxide (TiO2) thin films, a semiconductor that is widely used for photocatalysis applications, particularly for the treatment of polluted water. For this purpose, two complementary approaches were studied: increasing the surface area available for photocalatytic reactions and coupling between TiO2 and gold nanoparticles.. For the first approach, TiO2 thin films with different morphological structures were fabricated by Atomic Layer Deposition: dense and porous flat films, and inverse opals films.In order to evaluate photocatalytic activity of the different films, the degradation of methylene blue in aqueous solut…
Co-GLAD sputtering of tungsten-based nanostructured metallic thin films
2022
A structural and electrical study of tungsten-based metal thin films prepared by co-sputtering GLAD is the subject of this thesis. For this purpose, three different systems (W-W, W-Ag and W-Mo) have been developed using two opposite metallic targets (tilt angle α = 80° with the substrate). In addition to the choice of the second metallic element, different parameters involved in the growth of these films have undergone a variation (working pressure, thickness and second target current) to understand their influence on structural and electrical behaviors of these films. All three systems present a columnar and porous structure. The morphology of these films (especially the inclination of the…