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Preparation and characterization of oil-soluble In2O3 nanoparticles and In2O3-SnO2 nanocomposites and their calcined thin films

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Abstract

Oil-soluble In2O3 nanoparticles and In2O3–SnO2 nanocomposites were prepared in oleylamine via decomposition of metal acetylacetonate precursors. Thin films of In2O3 and In2O3–SnO2 were obtained by spin-coating solutions of the oil-soluble In2O3 nanoparticles and In2O3–SnO2 nanocomposites onto substrates and then calcining them. Transmission electron microspectroscopy, scanning electron microspectroscopy, atomic force microspectroscopy, X-ray diffraction, ultraviolet–visible absorption, and photoluminescence spectroscopy were used to investigate the properties of the nanoparticles and thin films. The In2O3 nanoparticles were cubic-phased spheres with a diameter of ~8 nm; their spectra exhibited a broad emission peak centered at 348 nm. The In2O3–SnO2 nanocomposites were co-particles composed of smaller In2O3 particles and larger SnO2 particles; their spectra exhibited a broad emission peak at 355 nm. After the In2O3–SnO2 nanocomposites were calcined at 400°C, the obtained thin films were highly transparent and conductive, with a thickness of 30–40 nm; the surfaces of the thin films were smooth and crack-free.

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  1. Department of Materials Physics and Chemistry, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Li-ping Wang, Xu-dong Xu & Jia-xing Wang

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Wang, Lp., Xu, Xd. & Wang, Jx. Preparation and characterization of oil-soluble In2O3 nanoparticles and In2O3-SnO2 nanocomposites and their calcined thin films. Int J Miner Metall Mater 22, 543–548 (2015). https://doi.org/10.1007/s12613-015-1105-z

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  • DOI: https://doi.org/10.1007/s12613-015-1105-z

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