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Titre : Elaboration et étude des couches minces d’oxyde d’étain Type de document : texte imprimé Auteurs : Mourad Khechba, Auteur ; Abderaheman Bouabellou, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 97 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Couche mince SnO2 dopage Sol-Gel DRX AFM Spectroscopie Raman UV-Vis Ellipsométrie spectroscopique (SE) Thin films doping Raman spectroscopy UV-Visible Ellipsometry Spectroscopic ??????? ??????? ????? ??????? ???????-????-???? ???? ?????? ??????? ???? ????? ?????? ??????? ????? ??????? ?????? ??? ????????? ???????? ???????? ???????? Index. décimale : 530 Physique Résumé : This work is devoted to the development of the tin oxide thin films by the sol-gel method. The effect of the annealing temperature, the number of layers and the doping on the structural and optical properties of the films obtained were investigated. The obtained films are characterized by X-ray diffraction (DRX), RAMAN spectroscopy, atomic force microscopy (AFM), UV-Visible spectroscopy and ellipsometry spectroscopic. Raman spectroscopy results show that the SnO2 thin films are crystallizes in rutile phase. A good crystallization is observed after 3 coats. The results of optical characterization show that all the films are transparent (75 to 85% optical transmittance) in the visible and The energy band gap of all the samples lies in the range of 3.63eV– 3.89eV With regard to doping, undoped and doped tin oxide thin films (SnO2:Cd, SnO2:Al) were deposited by Sol Gel Dip Coating method on glass and silicon Si(100) substrates. The DRX shows that all the films deposited on glass substrates have an amorphous structure. On the other hand, the films deposited on Si (100) substrate crystallize in the rutile phase, with a preferential orientation along the axis (310). AFM observations of the surface show that the doping rate affects the roughness. The grain size and the roughness of the samples decrease with the increase of the doping concentration. The SnO2, SnO2:Cd and SnO2:Al thin films are transparent in the visible region and opaque in the ultraviolet region. The band gap, determined from the transmission spectra for the deposited films, also decreases with the increase in the doping rate (from 06 to 10% Cd, and from 04 to 06% Al). In addition, the increase of the cadmium and aluminum doping concentration causes a slight increase in the refractive index.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/KHE7337.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10987 Elaboration et étude des couches minces d’oxyde d’étain [texte imprimé] / Mourad Khechba, Auteur ; Abderaheman Bouabellou, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2018 . - 97 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Couche mince SnO2 dopage Sol-Gel DRX AFM Spectroscopie Raman UV-Vis Ellipsométrie spectroscopique (SE) Thin films doping Raman spectroscopy UV-Visible Ellipsometry Spectroscopic ??????? ??????? ????? ??????? ???????-????-???? ???? ?????? ??????? ???? ????? ?????? ??????? ????? ??????? ?????? ??? ????????? ???????? ???????? ???????? Index. décimale : 530 Physique Résumé : This work is devoted to the development of the tin oxide thin films by the sol-gel method. The effect of the annealing temperature, the number of layers and the doping on the structural and optical properties of the films obtained were investigated. The obtained films are characterized by X-ray diffraction (DRX), RAMAN spectroscopy, atomic force microscopy (AFM), UV-Visible spectroscopy and ellipsometry spectroscopic. Raman spectroscopy results show that the SnO2 thin films are crystallizes in rutile phase. A good crystallization is observed after 3 coats. The results of optical characterization show that all the films are transparent (75 to 85% optical transmittance) in the visible and The energy band gap of all the samples lies in the range of 3.63eV– 3.89eV With regard to doping, undoped and doped tin oxide thin films (SnO2:Cd, SnO2:Al) were deposited by Sol Gel Dip Coating method on glass and silicon Si(100) substrates. The DRX shows that all the films deposited on glass substrates have an amorphous structure. On the other hand, the films deposited on Si (100) substrate crystallize in the rutile phase, with a preferential orientation along the axis (310). AFM observations of the surface show that the doping rate affects the roughness. The grain size and the roughness of the samples decrease with the increase of the doping concentration. The SnO2, SnO2:Cd and SnO2:Al thin films are transparent in the visible region and opaque in the ultraviolet region. The band gap, determined from the transmission spectra for the deposited films, also decreases with the increase in the doping rate (from 06 to 10% Cd, and from 04 to 06% Al). In addition, the increase of the cadmium and aluminum doping concentration causes a slight increase in the refractive index.
Diplôme : Doctorat en sciences En ligne : ../theses/physique/KHE7337.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10987 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KHE/7337 KHE/7337 Thèse Bibliothèque principale Thèses Disponible La synthèse des nano poudres de Cu O avec la méthode précipitation Sol-Gel en utilisant le précurseurCuSO4 et l’étude de leurs propriétés structurales et optiques / Sara Mehadjebi
Titre : La synthèse des nano poudres de Cu O avec la méthode précipitation Sol-Gel en utilisant le précurseurCuSO4 et l’étude de leurs propriétés structurales et optiques Type de document : texte imprimé Auteurs : Sara Mehadjebi, Auteur ; Abderrahmane Chaieb, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2015 Importance : 93 f. Format : 30 cm. Note générale : 2 copies imprimes disponibles . Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Sciences des Matériaux Semi Conducteurs
CuO sol gel DRX MEB infra rouge absorption méthodes de synthèses sol-gel process UV-Visible spectroscopy the infrared
spectroscopy(IR) methods of analysis ????? ?????? ??? ??? ??????? ??????? ??? ???????Index. décimale : 530 Physique Résumé : The Sol-Gel method is a very attractive technique for elaborating materials, since it is known to be
able to synthesize ,at low temperature ,both nanometric powders or materials with fine
microstructure .moreover, it ensures a high chemical purity and homogeneity and also controls ,in
an accurate manner ,the morphology of the synthesized materials .
In the present work we have fabricated and characterized pure copper oxide powders “CuO” and its
composite thin film (CuO/PMMA)by sol-gel process (wet-chemistry route) using two different
precursor (CuSO4+5H2 O) and (Cu(CH3 COO)2 ,H2 O) .
Various analysis techniques have been used to characterize the CuO powders and its composites
thin films, they are divided into two category:
The structural analysis including the X-rays diffraction (XRD),the infrared
spectroscopy(IR)and the electron scanning microscopy (MEB).
UV-Visible spectroscopy has been used for the determination of optical gap.
For the CuO prepared by the first precursor (CuSO4+5H2 O) and with different annealing
temperatures ,the study by X-rays diffraction (DRX) reveals single phase monoclinic structure of
CuO ,the average crystallite size change with annealing temperature .
For the CuO prepared by the second precursor (Cu(CH3 COO)2 ,H2 O) the study by X-rays
diffraction (XRD),reveals single phase monoclinic structure of CuO ,the average crystallite size of
the powder annealed to 450℃ is 16,76nm.
The study of optical properties of the CuO/PMMA composite thin films by the two methods has
shown a band gap is estimated to be 3.91eV.
Diplôme : Magistère En ligne : ../theses/physique/MEH6842.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10117 La synthèse des nano poudres de Cu O avec la méthode précipitation Sol-Gel en utilisant le précurseurCuSO4 et l’étude de leurs propriétés structurales et optiques [texte imprimé] / Sara Mehadjebi, Auteur ; Abderrahmane Chaieb, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2015 . - 93 f. ; 30 cm.
2 copies imprimes disponibles .
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Sciences des Matériaux Semi Conducteurs
CuO sol gel DRX MEB infra rouge absorption méthodes de synthèses sol-gel process UV-Visible spectroscopy the infrared
spectroscopy(IR) methods of analysis ????? ?????? ??? ??? ??????? ??????? ??? ???????Index. décimale : 530 Physique Résumé : The Sol-Gel method is a very attractive technique for elaborating materials, since it is known to be
able to synthesize ,at low temperature ,both nanometric powders or materials with fine
microstructure .moreover, it ensures a high chemical purity and homogeneity and also controls ,in
an accurate manner ,the morphology of the synthesized materials .
In the present work we have fabricated and characterized pure copper oxide powders “CuO” and its
composite thin film (CuO/PMMA)by sol-gel process (wet-chemistry route) using two different
precursor (CuSO4+5H2 O) and (Cu(CH3 COO)2 ,H2 O) .
Various analysis techniques have been used to characterize the CuO powders and its composites
thin films, they are divided into two category:
The structural analysis including the X-rays diffraction (XRD),the infrared
spectroscopy(IR)and the electron scanning microscopy (MEB).
UV-Visible spectroscopy has been used for the determination of optical gap.
For the CuO prepared by the first precursor (CuSO4+5H2 O) and with different annealing
temperatures ,the study by X-rays diffraction (DRX) reveals single phase monoclinic structure of
CuO ,the average crystallite size change with annealing temperature .
For the CuO prepared by the second precursor (Cu(CH3 COO)2 ,H2 O) the study by X-rays
diffraction (XRD),reveals single phase monoclinic structure of CuO ,the average crystallite size of
the powder annealed to 450℃ is 16,76nm.
The study of optical properties of the CuO/PMMA composite thin films by the two methods has
shown a band gap is estimated to be 3.91eV.
Diplôme : Magistère En ligne : ../theses/physique/MEH6842.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10117 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MEH/6842 MEH/6842 Thèse Bibliothèque principale Thèses Disponible
Titre : Contribution à l'élaboration de couches minces d'oxydes transparents conducteurs (TCO) Type de document : texte imprimé Auteurs : Fayssal Ynineb ; Université Mentouri, Editeur scientifique ; N. Attaf, Directeur de thèse Année de publication : 2010 Importance : 104 f. Note générale : 01 Disponible à la salle de recherche 01 Disponible au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : DRX Résistivité électrique Couches minces TCO Spray ultrasonique Caractérisation optique Index. décimale : 530 Physique En ligne : ../theses/physique/YNI5646.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3397 Contribution à l'élaboration de couches minces d'oxydes transparents conducteurs (TCO) [texte imprimé] / Fayssal Ynineb ; Université Mentouri, Editeur scientifique ; N. Attaf, Directeur de thèse . - 2010 . - 104 f.
01 Disponible à la salle de recherche 01 Disponible au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : DRX Résistivité électrique Couches minces TCO Spray ultrasonique Caractérisation optique Index. décimale : 530 Physique En ligne : ../theses/physique/YNI5646.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=3397 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité YNI/5646 YNI/5646 Thèse Bibliothèque principale Thèses Disponible
Titre : Contribution à l’etude de la réaction de substitution de carbonyles dans des complexes [Fe-Fe] modèle d’hydrogénases : Synthèses et etudes structurales. Type de document : texte imprimé Auteurs : Naouel Makouf ép Boukrina, Auteur ; Abdelhamid Mousser, Directeur de thèse ; Hénia Mousser, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 124 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Hydrogénases [Fe-Fe] Complexes di fer hexacarbonyles Substitution du carbonyle DRX [FeFe] hydrogenase Diiron hexacarbonyl complex Carbon monoxide substitution ???????????? ??????? ?????? ????? ?????? ???????????? ????? ??????? ?????????? ?????? ?????? ??????? (DRX) Index. décimale : 540 Chimie et sciences connexes Résumé : This thesis concerns the synthesis and the structural characterization of organometallic complexes inspired by the active site of [Fe-Fe] hydrogenases. During this work, we have obtained:
Two binuclear hexacarbonyl complexes resulting from the reaction of nonacarbonyl iron Fe2(CO)9 on the phenyldithiobenzoate and 1,2- dithiolene respectively:
- (µ-η2PhC(S)=C(S)Ph)Fe2(CO)6 1- (µ-(o)SPhS-)Fe2(CO)6 2
Three complexes resulting from the substitution reaction of carbonyls by P(OMe)3 in complex 1:
- (µPhC(S)=C(S)Ph)Fe2(CO)4[P(OMe)3]21a.
- (η2PhC(S)=C(S)Ph)Fe(CO)[P(OMe)3]21b.
- (µ-PhC(S)=C(S)Ph)Fe2(CO)5[P(OMe)3] 1c.
Two complexes resulting from the reaction of carbonyl substitution by
(Me)2PhNC in complex 2:
- (-(o)SPhS-)Fe2(CO)5[(Me)2PhNC] 2a.
- (-(o)SPhS-)Fe2(CO)4[(Me)2PhNC]2 2b.
The structural study of complexes 1, 1a, 2 and 2a shows that they are structural
models of [Fe-Fe] hydrogenases.
Diplôme : Doctorat en sciences En ligne : ../theses/chimie/MAK7318.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10968 Contribution à l’etude de la réaction de substitution de carbonyles dans des complexes [Fe-Fe] modèle d’hydrogénases : Synthèses et etudes structurales. [texte imprimé] / Naouel Makouf ép Boukrina, Auteur ; Abdelhamid Mousser, Directeur de thèse ; Hénia Mousser, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2018 . - 124 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Hydrogénases [Fe-Fe] Complexes di fer hexacarbonyles Substitution du carbonyle DRX [FeFe] hydrogenase Diiron hexacarbonyl complex Carbon monoxide substitution ???????????? ??????? ?????? ????? ?????? ???????????? ????? ??????? ?????????? ?????? ?????? ??????? (DRX) Index. décimale : 540 Chimie et sciences connexes Résumé : This thesis concerns the synthesis and the structural characterization of organometallic complexes inspired by the active site of [Fe-Fe] hydrogenases. During this work, we have obtained:
Two binuclear hexacarbonyl complexes resulting from the reaction of nonacarbonyl iron Fe2(CO)9 on the phenyldithiobenzoate and 1,2- dithiolene respectively:
- (µ-η2PhC(S)=C(S)Ph)Fe2(CO)6 1- (µ-(o)SPhS-)Fe2(CO)6 2
Three complexes resulting from the substitution reaction of carbonyls by P(OMe)3 in complex 1:
- (µPhC(S)=C(S)Ph)Fe2(CO)4[P(OMe)3]21a.
- (η2PhC(S)=C(S)Ph)Fe(CO)[P(OMe)3]21b.
- (µ-PhC(S)=C(S)Ph)Fe2(CO)5[P(OMe)3] 1c.
Two complexes resulting from the reaction of carbonyl substitution by
(Me)2PhNC in complex 2:
- (-(o)SPhS-)Fe2(CO)5[(Me)2PhNC] 2a.
- (-(o)SPhS-)Fe2(CO)4[(Me)2PhNC]2 2b.
The structural study of complexes 1, 1a, 2 and 2a shows that they are structural
models of [Fe-Fe] hydrogenases.
Diplôme : Doctorat en sciences En ligne : ../theses/chimie/MAK7318.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10968 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MAK/7318 MAK/7318 Thèse Bibliothèque principale Thèses Disponible
Titre : Dépôt et Caractérisation des Electrodes en Couches Minces Transparentes et Conductric Type de document : texte imprimé Auteurs : Abdelkader Hafdallah, Auteur ; Mohamed Salah Aida, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 86 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : Couches minces TCO Spray ultrasonique DRX Caractérisation optique Thin films Ultrasonic Spray XRD optical Characterization ??????? ??????? ???? ??? ?????? ??????? ???????? Index. décimale : 530 Physique Résumé : Our work concerns the development and the characterization of the electrodes in
conducting transparent thin films: ZnO, SnO , In O , binary mixtures and ternary mixtures by
ultrasonic spray technique at °C.
In the first part of this thesis, we conducted three series of binary oxides (ZnO: SnO2)
(ZnO:In O ) and (SnO :In O ) and in the second part, we conducted three series of ternary oxide
(ZnO:SnO :In O ). We studied the influence of the mixing ratio of the components on the
characteristics of films.
These films are analyzed by various techniques of characterization of materials. The
structural characterization of films by analysis of the spectra of diffraction of the X-ray showed
that the films of the binary and ternary mixtures containing ZnO present a preferential direction
according to the plan (002) and (100) for the series (ZnO:In O ). In films of the series
(SnO :In O ) and In O3 (1 -X) SnO2 (0.5X) ZnO (0.5X) the preferential orientation is along the axis
(222) of In O . The UV-Visible spectrophotometer of these films confirms that it is possible to
obtain good transparent films of operating TCO with a transmittance of about 75 to 85% in the
visible one. The measurement of electric conductivity also confirmed that the combination of
transparent oxides can improve their conductivity up to (Ω cm) -
Diplôme : Doctorat en sciences En ligne : ../theses/physique/HAF6951.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10327 Dépôt et Caractérisation des Electrodes en Couches Minces Transparentes et Conductric [texte imprimé] / Abdelkader Hafdallah, Auteur ; Mohamed Salah Aida, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 86 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : Couches minces TCO Spray ultrasonique DRX Caractérisation optique Thin films Ultrasonic Spray XRD optical Characterization ??????? ??????? ???? ??? ?????? ??????? ???????? Index. décimale : 530 Physique Résumé : Our work concerns the development and the characterization of the electrodes in
conducting transparent thin films: ZnO, SnO , In O , binary mixtures and ternary mixtures by
ultrasonic spray technique at °C.
In the first part of this thesis, we conducted three series of binary oxides (ZnO: SnO2)
(ZnO:In O ) and (SnO :In O ) and in the second part, we conducted three series of ternary oxide
(ZnO:SnO :In O ). We studied the influence of the mixing ratio of the components on the
characteristics of films.
These films are analyzed by various techniques of characterization of materials. The
structural characterization of films by analysis of the spectra of diffraction of the X-ray showed
that the films of the binary and ternary mixtures containing ZnO present a preferential direction
according to the plan (002) and (100) for the series (ZnO:In O ). In films of the series
(SnO :In O ) and In O3 (1 -X) SnO2 (0.5X) ZnO (0.5X) the preferential orientation is along the axis
(222) of In O . The UV-Visible spectrophotometer of these films confirms that it is possible to
obtain good transparent films of operating TCO with a transmittance of about 75 to 85% in the
visible one. The measurement of electric conductivity also confirmed that the combination of
transparent oxides can improve their conductivity up to (Ω cm) -
Diplôme : Doctorat en sciences En ligne : ../theses/physique/HAF6951.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10327 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité HAF/6951 HAF/6951 Thèse Bibliothèque principale Thèses Disponible
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