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The layered Bi2WO6 phase: Role of elaboration conditions on structure and luminescence properties
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نویسنده
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taoufyq a. ,ait ahsaine h. ,patout l. ,benlhachemi a. ,bakiz b. ,ezahri m. ,guinneton f. ,lyoussi a. ,nolibe g. ,gavarri j.-r.
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منبع
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journal of materials and environmental science - 2014 - دوره : 5 - شماره : S1 - صفحه:2522 -2526
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چکیده
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In the present work,we investigate the structural and luminescence properties of the bismuth tungstate bi2wo6. this phase is interesting because of its electrical [1],photocatalytic [2] and luminescence [3] properties. polycrystalline samples were elaborated using a coprecipitation technique followed by a calcination process at different temperatures (300,400,600 and 900°c). the samples were characterized by x-ray diffraction,scanning and transmission electron microscopy (sem,tem) analyses. the space group pca21 has been confirmed for this phase. the transmission electron microscopy analysis showed that this structural configuration is valid at a very low scale. crystal cell parameters and cell volume depend on elaboration temperature. luminescence experiments of these polycrystalline samples were performed under uv-laser light irradiation. luminescence intensities depend on the elaboration conditions.
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کلیدواژه
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Bismuth tungstate; Co-precipitation method; Luminescence properties; Microstructural study
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آدرس
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institut matériaux microélectronique et nanosciences de provence,im2np,umr cnrs 7334,université de toulon,bp 20132,la garde cedex,france,laboratoire matériaux et environnement lme,faculté des sciences,université ibn zohr,bp 8106,morocco,département d'études des réacteurs,laboratoire dosimétrie capteurs instrumentation,cea,cadarache,france,société cesigma- signals and systems,1576 chemin de la planquette, France, laboratoire matériaux et environnement lme,faculté des sciences,université ibn zohr, Morocco, institut matériaux microélectronique et nanosciences de provence,im2np,umr cnrs 7334,université de toulon,bp 20132, France, laboratoire matériaux et environnement lme,faculté des sciences,université ibn zohr, Morocco, laboratoire matériaux et environnement lme,faculté des sciences,université ibn zohr, Morocco, laboratoire matériaux et environnement lme,faculté des sciences,université ibn zohr, Morocco, institut matériaux microélectronique et nanosciences de provence,im2np,umr cnrs 7334,université de toulon,bp 20132, France, département d'études des réacteurs,laboratoire dosimétrie capteurs instrumentation,cea, France, société cesigma- signals and systems,1576 chemin de la planquette, France, institut matériaux microélectronique et nanosciences de provence,im2np,umr cnrs 7334,université de toulon,bp 20132, France
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Authors
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