Issue 2, 2012

Interfacial photoluminescence emission properties of core/shell Al2O3/ZrO2

Abstract

This research investigated the synthesis of the Al2O3/ZrO2 core-shell system using a polymeric precursor method. The interfacial features emission show the possibility for control of the luminescence behaviour. X-ray diffraction (XRD) patterns are well defined for α-Al2O3 and for γ-Al2O3, core structures and a zirconia shell phase for high concentrations. Photoluminescence (PL) spectra (λexc = 350.7 nm) reveal that the effect of the zirconia coating on the alumina was more effective for α-Al2O3 than for γ-Al2O3 which may be related to the zirconia coating process on alumina. The image transmission electron microscopy (TEM) shows an amorphous region of 10 nm which is attributed to a ZrO2 shell layer.

Graphical abstract: Interfacial photoluminescence emission properties of core/shell Al2O3/ZrO2

Article information

Article type
Communication
Submitted
25 Aug 2011
Accepted
07 Nov 2011
First published
28 Nov 2011

CrystEngComm, 2012,14, 393-396

Interfacial photoluminescence emission properties of core/shell Al2O3/ZrO2

C. W. Raubach, M. Z. Krolow, M. F. Mesko, S. Cava, M. L. Moreira, E. Longo and N. L. V. Carreño., CrystEngComm, 2012, 14, 393 DOI: 10.1039/C1CE06099F

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