Writers: Rosana F. Gonçalves; José T. O. Figueiredo; Alberthmeiry T. de Figueiredo; Maximo Siu Li; Elson Longo; and Mario J. Godinho
Keywords: Photoluminescence; nanoparticles
Abstract: A YSZ@Al2O3 nanocomposite was obtained by Al2O3 coating on the surface of yttrium stabilized zirconia via a polymeric precursor method. The resulting core–shell structures were characterized by X-ray diffraction, scanning electron microscopy, transmission electronic microscopy and PL spectra. The TEM micrographs clearly show a homogeneous Al2O3 shell around the ZrO2 core. The observed PL is related to surface–interface defects. Such novel technologies can, in principle, explore materials which are not available in the bulk single crystal form but their figure-of-merit is dramatically dependent on the surface–interface defect states.
DOI: 10.1039/c3ce27071h
