Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5437623 | Ceramics International | 2017 | 6 Pages |
Abstract
Indium tin oxide (ITO) nanoparticles and gallium-doped indium tin oxide (GITO) nanoparticles with various molar ratios of dopants were prepared by a solution method in oleylamine. Characterization of crystal, morphology, and optical properties was carried out using X-ray diffraction (XRD), transmission electron microscopy (TEM), ultraviolet-visible (UV-Vis), photoluminescent (PL), and Fourier transform infrared spectroscopy (FT-IR). XRD patterns show that with increasing of Sn, the crystal structure of ITO nanoparticles varies gradually from standard cubic bixbyite In2O3 to amorphous and to standard tetragonal SnO2, whereas the GITO nanoparticles retain the crystal structure of ITO. The smallest particle size is around 10Â nm, and the morphology of the particles is nearly spherical. The smallest particles, though coated with oleylamine, tend to aggregate forming larger flower-like particles. Defect level emission at the present of dopants was observed in the PL spectra of the ITO and GITO nanoparticles.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Liping Wang, Fu Zhang,