Artículos de revistas
Photoluminescence of core-shell nanoparticles made from yttrium stabilized zirconia powder grain coated with alumina
Fecha
2013-05-07Registro en:
CrystEngComm, v. 15, n. 17, p. 3292-3295, 2013.
1466-8033
10.1039/c3ce27071h
WOS:000316962300009
2-s2.0-84875792670
Autor
CAC/UFG
Universidade de São Paulo (USP)
Universidade Estadual Paulista (Unesp)
Institución
Resumen
A YSZ@Al2O3 nanocomposite was obtained by Al 2O3 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. © 2013 This journal isThe Royal Society of Chemistry.