In situ synthesis of Zn2SiO4:V obtained by incorporation of ZnO:V nanoparticles in silica host matrix
by L. El Mir, J. El Ghoul, C. Barthou, M. Saadoun, S. Alaya
International Journal of Nanoparticles (IJNP), Vol. 2, No. 1/2/3/4/5/6, 2009

Abstract: Zn2SiO4:V particles embedded in silica host matrix were prepared by a simple solid-phase reaction after the incorporation of vanadium doped ZnO nanoparticles in silica monolith using sol-gel method. The obtained sample exhibits a strong PL band in the visible range and two narrow emission bands in the UV range under high power excitation. Photoluminescence excitation (PLE) measurements show different origins of the visible emission (or of the emission bands). It is suggested that ZnO excitonic emissions and radiative defects, resulting from heat treatment and crystallisation at the interfaces between Zn2SiO4:V and silica host matrix, are responsible for these luminescence bands.

Online publication date: Wed, 30-Sep-2009

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