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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Synthesis and luminescence properties of ZnO/Zn
2
SiO
4
/SiO
2
composite based on nanosized zinc oxide-confined silica aerogels
Physica B: Condensed Matter, Volume 388, No. 1-2, Year 2007
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Description
Luminescence properties of crystalline Zn2SiO4 greatly depend on the method of elaboration. A new protocol of sol-gel processing technique was used to prepare zinc orthosilicate willemite crystals incorporated in silica host matrix containing ZnO nanoparticles (ZnO/Zn2SiO4/SiO2). Hydrolysis and condensation of tetraethylorthosilicate have been achieved in the presence of 25 nm-sized nanocrystalline ZnO particles. Supercritical drying and annealing in the range 1423-1473 K in air atmosphere yielded a new photoluminescence band centred at around 760 nm and observed for the first time. Photoluminescence excitation measurements show different origins in the recombination mechanism of this emission band. Different possible attributions of the 760 nm emission band will be discussed. © 2006 Elsevier B.V. All rights reserved.
Authors & Co-Authors
El-Mir, Lassaad Mabrouk
Tunisia, Gabes
Université de Gabès
Amlouk, Amel
Tunisia, Gabes
Université de Gabès
Barthou, Charles
France, Paris
Institut Des Nanosciences de Paris
Alaya, Sahbi
Tunisia, Gabes
Université de Gabès
Statistics
Citations: 92
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1016/j.physb.2006.06.151
ISSN:
09214526
Research Areas
Environmental