MOLYBDENUM TRIOXIDE THIN FILMS DOPED WITH GOLD NANOPARTICLES GROWN BY A SEQUENTIAL METHODOLOGY: PHOTOCHEMICAL METAL-ORGANIC DEPOSITION (PMOD) AND DC-MAGNETRON SPUTTERING

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 Sp...

Full description

Saved in:
Bibliographic Details
Published inJournal of the Chilean Chemical Society Vol. 61; no. 1; pp. 2816 - 2820
Main Authors CASTILLO, C, BUONO-CORE, G, MANZUR, C, YUTRONIC, N, SIERPE, R, CABELLO, G, CHORNIK, B
Format Journal Article
LanguageEnglish
Published Sociedad Chilena de Química 01.03.2016
Subjects
CHEMISTRY, MULTIDISCIPLINARY
C. x-ray diffraction
A. nanostructures
B. sputtering
C. photoelectron spectroscopy
A. oxides
A. thin films
Online AccessGet full text

Cover

More Information
Summary: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.
ISSN:0717-9707
0717-9707
DOI:10.4067/S0717-97072016000100014