Molybdenum trioxide thin films doped with gold nanoparticles grown by a sequential methodology: Photochemical Metal-Organic Deposition (PMOD) and DC-magnetron sputtering

C. Castillo, G. Buono-Core, C. Manzur, N. Yutronic, R. Sierpe, G. Cabello, B. Chornik

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

13 Citas (Scopus)

Resumen

Gold nanoparticles (AuNPs) were deposited by DC-magnetron sputtering onto molybdenum trioxide (MoO3) thin films grown by Photochemical Metal-Organic Deposition (PMOD) on Si(100) 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 Si(100) showed the presence of Mo(VI) and Mo(V), 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 AuNPs.

Idioma originalInglés
Páginas (desde-hasta)2816-2820
Número de páginas5
PublicaciónJournal of the Chilean Chemical Society
Volumen61
N.º1
DOI
EstadoPublicada - 2016
Publicado de forma externa

Huella

Profundice en los temas de investigación de 'Molybdenum trioxide thin films doped with gold nanoparticles grown by a sequential methodology: Photochemical Metal-Organic Deposition (PMOD) and DC-magnetron sputtering'. En conjunto forman una huella única.

Citar esto