Molybdenum trioxide thin films doped with gold nanoparticles grown by a sequential methodology: photochemical metal-organic deposition PMOD and DC-magnetron sputteringReport as inadecuate




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Gold nanoparticles AuNPs were deposited by DC-magnetron sputtering onto molybdenum trioxide MoO3 thin films grown by Photochemical Metal-Organic Deposition PMOD on Si100 and borosilicate glass substrates. The chemical, optical and morphology properties of the films were studied by UV-Vis Spectroscopy, Scanning Electron Microscopy SEM, X-Ray Photoelectron Spectroscopy XPS, and X-Ray Diffraction XRD. SEM revealed that AuNPs formed after 5 s of sputtering. AuNPs are spherical and have both an average diameter of 18 nm and a relatively narrow size distribution. As the deposition time increases, larger structures are formed by an aggregation of AuNPs. XPS studies of the AuNP-MoO3 films on Si100 showed the presence of MoVI and MoV, which indicated that the films were primarily non-stoichiometric molybdenum oxides. The occurrence of oxygen vacancies in the substrate play an important role to stabilize the AuNPsIndización

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Author: Castillo, C.; - Buono-Core, Gonzalo E.; - Manzur, C.; - Yutronic Saez, Nicolas; - Sierpe Bustamante, Rodrigo; - Cabello, G.; - Ch

Source: http://repositorio.uchile.cl/



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