Characterization of cobalt oxide thin films prepared by a facile spray pyrolysis technique using perfume atomizer
Identifieur interne : 000556 ( Main/Exploration ); précédent : 000555; suivant : 000557Characterization of cobalt oxide thin films prepared by a facile spray pyrolysis technique using perfume atomizer
Auteurs : A. Louardi [Maroc] ; A. Rmili [Maroc] ; F. Ouachtari [Maroc] ; A. Bouaoud [Maroc] ; B. Elidrissi [Maroc] ; H. Erguig [Maroc]Source :
- Journal of alloys and compounds [ 0925-8388 ] ; 2011.
Descripteurs français
- Pascal (Inist)
- Oxyde de cobalt, Dépôt projection, Solution aqueuse, Hydratation, Cobalt, Chlorure, Dépendance température, Température substrat, Propriété optique, Diffraction RX, Spinelles, Orientation préférentielle, Cristallite, Spectre Raman, Couche mince, Polycristal, Réseau cubique, Spectrométrie Raman, Microscopie électronique balayage, Microporosité, Structure grain fin, Coefficient absorption, Facteur transmission, Microstructure, Morphologie, Co3O4, Substrat verre, 7866, 6855J, 8115R, Pyrolyse par projection.
- Wicri :
- topic : Cobalt.
English descriptors
- KwdEn :
- Absorption coefficients, Aqueous solutions, Chlorides, Cobalt, Cobalt oxide, Crystallites, Cubic lattices, Fine grain structure, Hydration, Microporosity, Microstructure, Morphology, Optical properties, Polycrystals, Preferred orientation, Raman spectra, Raman spectroscopy, Scanning electron microscopy, Spinels, Spray coatings, Spray pyrolysis, Substrat temperature, Temperature dependence, Thin films, Transmittance, XRD.
Abstract
Cobalt oxide (Co3O4) thin films were prepared by a facile spray pyrolysis technique using perfume atomizer from aqueous solution of hydrated cobalt chloride salt (CoCl2.6H2O) as source of cobalt. The films were deposited onto the amorphous glass substrates kept at different temperatures (300-500 °C). The influences of molar concentration of the starting solution and substrate temperature on the structural, morphological and optical properties of (Co3O4) thin films were studied. It was found from X-ray diffraction (XRD) analysis that the films prepared with molar concentration greater than 0.025 M/L were polycrystalline spinel type cubic structure. The preferred orientation of the crystallites of these films changes gradually from (622) to (111) when the substrate temperature increases. By Raman spectroscopy, five Raman active modes characteristic of Co3O4 spinel type cubic structure were found and identified at 194, 484, 522, 620 and 691 cm-1. The scanning electron microscopy (SEM) images showed micro porous structure with very fine grains less than 50 nm in diameter. These films exhibited also a transmittance value of about 70% in the visible and infra red range.
Affiliations:
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Louardi</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire des Hautes Energies, Sciences de l'Ingénierie et Réacteurs (LHESIR), Equipe Ingénierie et Matériaux (INMA), Département de Physique, Faculté des Sciences</s1><s2>Kenitra,4</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Maroc</country><wicri:noRegion>Kenitra,4</wicri:noRegion></affiliation></author><author><name sortKey="Rmili, A" sort="Rmili, A" uniqKey="Rmili A" first="A." last="Rmili">A. Rmili</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire des Hautes Energies, Sciences de l'Ingénierie et Réacteurs (LHESIR), Equipe Ingénierie et Matériaux (INMA), Département de Physique, Faculté des Sciences</s1><s2>Kenitra,4</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Maroc</country><wicri:noRegion>Kenitra,4</wicri:noRegion></affiliation></author><author><name sortKey="Ouachtari, F" sort="Ouachtari, F" uniqKey="Ouachtari F" first="F." last="Ouachtari">F. 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Bouaoud</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire des Hautes Energies, Sciences de l'Ingénierie et Réacteurs (LHESIR), Equipe Ingénierie et Matériaux (INMA), Département de Physique, Faculté des Sciences</s1><s2>Kenitra,4</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Maroc</country><wicri:noRegion>Kenitra,4</wicri:noRegion></affiliation></author><author><name sortKey="Elidrissi, B" sort="Elidrissi, B" uniqKey="Elidrissi B" first="B." last="Elidrissi">B. Elidrissi</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire des Hautes Energies, Sciences de l'Ingénierie et Réacteurs (LHESIR), Equipe Ingénierie et Matériaux (INMA), Département de Physique, Faculté des Sciences</s1><s2>Kenitra,4</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Maroc</country><wicri:noRegion>Kenitra,4</wicri:noRegion></affiliation></author><author><name sortKey="Erguig, H" sort="Erguig, H" uniqKey="Erguig H" first="H." last="Erguig">H. Erguig</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire des Hautes Energies, Sciences de l'Ingénierie et Réacteurs (LHESIR), Equipe Ingénierie et Matériaux (INMA), Département de Physique, Faculté des Sciences</s1><s2>Kenitra,4</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Maroc</country><wicri:noRegion>Kenitra,4</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Journal of alloys and compounds</title><title level="j" type="abbreviated">J. alloys compd.</title><idno type="ISSN">0925-8388</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of alloys and compounds</title><title level="j" type="abbreviated">J. alloys compd.</title><idno type="ISSN">0925-8388</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Absorption coefficients</term><term>Aqueous solutions</term><term>Chlorides</term><term>Cobalt</term><term>Cobalt oxide</term><term>Crystallites</term><term>Cubic lattices</term><term>Fine grain structure</term><term>Hydration</term><term>Microporosity</term><term>Microstructure</term><term>Morphology</term><term>Optical properties</term><term>Polycrystals</term><term>Preferred orientation</term><term>Raman spectra</term><term>Raman spectroscopy</term><term>Scanning electron microscopy</term><term>Spinels</term><term>Spray coatings</term><term>Spray pyrolysis</term><term>Substrat temperature</term><term>Temperature dependence</term><term>Thin films</term><term>Transmittance</term><term>XRD</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Oxyde de cobalt</term><term>Dépôt projection</term><term>Solution aqueuse</term><term>Hydratation</term><term>Cobalt</term><term>Chlorure</term><term>Dépendance température</term><term>Température substrat</term><term>Propriété optique</term><term>Diffraction RX</term><term>Spinelles</term><term>Orientation préférentielle</term><term>Cristallite</term><term>Spectre Raman</term><term>Couche mince</term><term>Polycristal</term><term>Réseau cubique</term><term>Spectrométrie Raman</term><term>Microscopie électronique balayage</term><term>Microporosité</term><term>Structure grain fin</term><term>Coefficient absorption</term><term>Facteur transmission</term><term>Microstructure</term><term>Morphologie</term><term>Co3O4</term><term>Substrat verre</term><term>7866</term><term>6855J</term><term>8115R</term><term>Pyrolyse par projection</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Cobalt</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Cobalt oxide (Co<sub>3</sub>O<sub>4</sub>) thin films were prepared by a facile spray pyrolysis technique using perfume atomizer from aqueous solution of hydrated cobalt chloride salt (CoCl<sub>2</sub>.6H<sub>2</sub>O) as source of cobalt. The films were deposited onto the amorphous glass substrates kept at different temperatures (300-500 °C). The influences of molar concentration of the starting solution and substrate temperature on the structural, morphological and optical properties of (Co<sub>3</sub>O<sub>4</sub>) thin films were studied. It was found from X-ray diffraction (XRD) analysis that the films prepared with molar concentration greater than 0.025 M/L were polycrystalline spinel type cubic structure. The preferred orientation of the crystallites of these films changes gradually from (622) to (111) when the substrate temperature increases. By Raman spectroscopy, five Raman active modes characteristic of Co<sub>3</sub>O<sub>4</sub> spinel type cubic structure were found and identified at 194, 484, 522, 620 and 691 cm<sup>-1</sup>. The scanning electron microscopy (SEM) images showed micro porous structure with very fine grains less than 50 nm in diameter. These films exhibited also a transmittance value of about 70% in the visible and infra red range.</div></front></TEI><affiliations><list><country><li>Maroc</li></country></list><tree><country name="Maroc"><noRegion><name sortKey="Louardi, A" sort="Louardi, A" uniqKey="Louardi A" first="A." last="Louardi">A. Louardi</name></noRegion><name sortKey="Bouaoud, A" sort="Bouaoud, A" uniqKey="Bouaoud A" first="A." last="Bouaoud">A. Bouaoud</name><name sortKey="Elidrissi, B" sort="Elidrissi, B" uniqKey="Elidrissi B" first="B." last="Elidrissi">B. Elidrissi</name><name sortKey="Erguig, H" sort="Erguig, H" uniqKey="Erguig H" first="H." last="Erguig">H. Erguig</name><name sortKey="Ouachtari, F" sort="Ouachtari, F" uniqKey="Ouachtari F" first="F." last="Ouachtari">F. Ouachtari</name><name sortKey="Rmili, A" sort="Rmili, A" uniqKey="Rmili A" first="A." last="Rmili">A. Rmili</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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