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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 الشرائح الرقيقة أكسيد القصدير التطعيم-سائل-جامد حيود الاشعة السينية مجهر القوة الذرية مطيافية رامان مطيافية الاشعة فوق البنفسجية والمرئية والمطياف الاهليجي 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 : 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 . - 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 الشرائح الرقيقة أكسيد القصدير التطعيم-سائل-جامد حيود الاشعة السينية مجهر القوة الذرية مطيافية رامان مطيافية الاشعة فوق البنفسجية والمرئية والمطياف الاهليجي 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 : 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 أكسيد الحديد صول جول الشرائح الرقيقة طرق التحضيرIndex. 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 : 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 . - 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 أكسيد الحديد صول جول الشرائح الرقيقة طرق التحضيرIndex. 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 : 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 : Caractérisation des textures de films AlN : Évolution au cours de la croissance et influence sur les propriétés d’utilisation. Type de document : texte imprimé Auteurs : Badis Riah, Auteur ; Nadjet Rouag, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2019 Importance : 119 f. Format : 30 cm. Note générale : Doctorat 3éme CYCLE LMD.
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
PhysiqueTags : physique:Sciences des Matériaux AlN hexagonal AlN cubique texture Fibre Épitaxie PVD DCMS HiPIMS DRX hexagonal AlN cubic AlN epitaxy XRD تباين المناحي الألياف النمو المثالي إنعراج الأشعة السينية (DRX) Index. décimale : 530 Physique Résumé : The objective of this thesis is to study the influence of anisotropy on the quality of AlN thin films, developed by two physical vapor deposition (PVD) techniques, DCMS and HiPIMS. AlN exists in two phases: a stable hexagonal phase and a cubic one generally considered as metastable. We are interested particularly in highlighting the last mentioned phase. For this, we have analyzed the texture of several series of AlN films deposited on different substrates of different nature and orientations by X-ray diffraction (XRD). The hexagonal phase is present under the form of fiber (0001), with reinforcements more or less remarkable, when the film is deposited on Si substrate of orientations (100) and (111). It is important to mention that the fiber (0001) can be tilted with respect to the normal of the substrate, mainly when the thickness increases. The use of SiC-6H substrate with lattice agreement with AlN, makes epitaxial growth possible at a temperature from 200 to 250 °C. Following the diffracted intensity has shown the absence of epitaxial growth of AlN (PVD), at low temperatures, on a composite substrate of AlN Kyma/Si (111). Furthermore, the use of AlN buffer layer, 2 nm thick, developed at high temperatures, makes the epitaxial growth of AlN (PVD) possible on Si (111) and at low temperatures. The XRD texture analysis allowed, as well, the highlighting of the AlN cubic phase. This cubic phase was carefully studied especially when it is not much mentioned in literature. We have shown that it is a transition layer between hAlN transition and the Si (100) substrate. The AlN cubic phase shows a crystalline response with several orientations for two methods, DCMS and HiPIMS, with a higher intensity in the case of DCMS. The lattice mismatch between the different structures and orientations confirm that the growth of hexagonal AlN under the form of (0001) fiber is facilitated by the presence of this AlN cubic phase.
Note de contenu : Annexes. Diplôme : Doctorat En ligne : ../theses/physique/RIA7502.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11335 Caractérisation des textures de films AlN : Évolution au cours de la croissance et influence sur les propriétés d’utilisation. [texte imprimé] / Badis Riah, Auteur ; Nadjet Rouag, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2019 . - 119 f. ; 30 cm.
Doctorat 3éme CYCLE LMD.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
PhysiqueTags : physique:Sciences des Matériaux AlN hexagonal AlN cubique texture Fibre Épitaxie PVD DCMS HiPIMS DRX hexagonal AlN cubic AlN epitaxy XRD تباين المناحي الألياف النمو المثالي إنعراج الأشعة السينية (DRX) Index. décimale : 530 Physique Résumé : The objective of this thesis is to study the influence of anisotropy on the quality of AlN thin films, developed by two physical vapor deposition (PVD) techniques, DCMS and HiPIMS. AlN exists in two phases: a stable hexagonal phase and a cubic one generally considered as metastable. We are interested particularly in highlighting the last mentioned phase. For this, we have analyzed the texture of several series of AlN films deposited on different substrates of different nature and orientations by X-ray diffraction (XRD). The hexagonal phase is present under the form of fiber (0001), with reinforcements more or less remarkable, when the film is deposited on Si substrate of orientations (100) and (111). It is important to mention that the fiber (0001) can be tilted with respect to the normal of the substrate, mainly when the thickness increases. The use of SiC-6H substrate with lattice agreement with AlN, makes epitaxial growth possible at a temperature from 200 to 250 °C. Following the diffracted intensity has shown the absence of epitaxial growth of AlN (PVD), at low temperatures, on a composite substrate of AlN Kyma/Si (111). Furthermore, the use of AlN buffer layer, 2 nm thick, developed at high temperatures, makes the epitaxial growth of AlN (PVD) possible on Si (111) and at low temperatures. The XRD texture analysis allowed, as well, the highlighting of the AlN cubic phase. This cubic phase was carefully studied especially when it is not much mentioned in literature. We have shown that it is a transition layer between hAlN transition and the Si (100) substrate. The AlN cubic phase shows a crystalline response with several orientations for two methods, DCMS and HiPIMS, with a higher intensity in the case of DCMS. The lattice mismatch between the different structures and orientations confirm that the growth of hexagonal AlN under the form of (0001) fiber is facilitated by the presence of this AlN cubic phase.
Note de contenu : Annexes. Diplôme : Doctorat En ligne : ../theses/physique/RIA7502.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11335 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité RIA/7502 RIA/7502 Thèse Bibliothèque principale Thèses Disponible
Titre : Composés à base de lanthanides : élaboration, caractérisation structurale et propriétés. Type de document : texte imprimé Auteurs : Hayet Anana, Auteur ; Chaouki Boudaren, Directeur de thèse Mention d'édition : 04/11/2020 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2020 Importance : 230 f. Format : 30 cm. Note générale : 1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Chimie: Chimie inorganique les complexes les lanthanides propriétés physico-chimique et photophysiques la stabilité thermique étude structurale DRX la théorie des graphes l'analyse de surface d'Hirshfeld la topologie the complexes the lanthanides the physico-chimicals and photophysicals properties thermal stability structural study X-rays diffraction graph set Hirshfeld surface analysis the topology المعقدات اللنثانایدات الخصائص الطيفية والفيزيائية الضوئية الثبات الحراري دراسة بنيوية حيود الأشعة السينية نظرية المخططات تحليل مساحة هارشفلد الطوبولوجيا Index. décimale : 540 Chimie et sciences connexes Résumé :
This work is concerned with the synthesis, structural determination X-rays diffraction and study of the physico-chimicals and photophysicals properties and thermal stability, as well as, graph set, Hirshfeld surface analysis and the topology of all mono and binuclear lanthanides complexes synthesis in this work. In the first part, the synthesis and the characterization of two new mononuclear lanthanides and fumaric acid complexes was investigated. The synthesis and study of the structural, spectroscopic and photophysical
properties of two series of binuclear compounds resulting from the lanthanides and L-tartaric acid is the topic of the second part of this work. In the last part, we describe the preparation of nine isostructural binuclear 4f complexes, where the assembling ligand is 1, 4-phenylenediacetate. The characterization by spectroscopic and photophysical methods was make for the nine complexes.
Note de contenu : Annexes. Diplôme : Doctorat en sciences En ligne : ../theses/chimie/ANA7661.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11495 Composés à base de lanthanides : élaboration, caractérisation structurale et propriétés. [texte imprimé] / Hayet Anana, Auteur ; Chaouki Boudaren, Directeur de thèse . - 04/11/2020 . - جامعة الإخوة منتوري قسنطينة, 2020 . - 230 f. ; 30 cm.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Chimie: Chimie inorganique les complexes les lanthanides propriétés physico-chimique et photophysiques la stabilité thermique étude structurale DRX la théorie des graphes l'analyse de surface d'Hirshfeld la topologie the complexes the lanthanides the physico-chimicals and photophysicals properties thermal stability structural study X-rays diffraction graph set Hirshfeld surface analysis the topology المعقدات اللنثانایدات الخصائص الطيفية والفيزيائية الضوئية الثبات الحراري دراسة بنيوية حيود الأشعة السينية نظرية المخططات تحليل مساحة هارشفلد الطوبولوجيا Index. décimale : 540 Chimie et sciences connexes Résumé :
This work is concerned with the synthesis, structural determination X-rays diffraction and study of the physico-chimicals and photophysicals properties and thermal stability, as well as, graph set, Hirshfeld surface analysis and the topology of all mono and binuclear lanthanides complexes synthesis in this work. In the first part, the synthesis and the characterization of two new mononuclear lanthanides and fumaric acid complexes was investigated. The synthesis and study of the structural, spectroscopic and photophysical
properties of two series of binuclear compounds resulting from the lanthanides and L-tartaric acid is the topic of the second part of this work. In the last part, we describe the preparation of nine isostructural binuclear 4f complexes, where the assembling ligand is 1, 4-phenylenediacetate. The characterization by spectroscopic and photophysical methods was make for the nine complexes.
Note de contenu : Annexes. Diplôme : Doctorat en sciences En ligne : ../theses/chimie/ANA7661.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11495 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité ANA/7661 ANA/7661 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, Auteur ; N. Attaf, Directeur de thèse Mention d'édition : 16/05/2010 Editeur : Constantine : Université Mentouri Constantine Année de publication : 2010 Importance : 104 f. Format : 30 cm. 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 : Sciences des matériaux: Semi-conducteurs DRX Résistivité électrique Couches minces TCO Spray ultrasonique Caractérisation optique Thin films TCO Ultrasonic spray Optical characterization Electrical resistivity الشرائح الرقیقة الرش فوق الصوتي الوصف الضوئي المقاومیة الكھربائیة Index. décimale : 530 Physique Résumé : Our work concerns the development and the characterization of the conducting transparent oxides thin films of: ZnO, SnO2 and In2O3, and their mixtures by the ultrasonic technique spray at 300°C.
In the first part of this thesis, we realized, in addition to pure oxides, a series of deposit containing ZnO by using the mixtures of: [ZnO:SnO2]
and [ZnO:In2O3]. In the second part, we realized another serie of oxides [SnO2:In2O3]. In the two parts we studied the influence of the rate mixture of components on the characteristics of films. These films are analyzed by various characterization techniques of materials. The structural characterization of films by analysis of the spectra of X-ray diffraction showed that the films based on the mixtures and containing ZnO present a preferential direction according to the plan (002) for the Rb1 series and (100) for the Rb2 series. In films of the series [SnO2:In2O3] the preferential orientation is along the axis (222) of In2O3. The UV-Visible spectrophotometer of these films confirms that it is possible to obtain good transparent films of TCO with a transmittance of about 75 to 85% in the visible range. The measurement of electric resistivity also confirmed the decrease of the electrical resistivity with mixtures to a value of 10-3 (Ω.cm).Note de contenu : Annexes. Diplôme : Magistère En ligne : ../theses/physique/YNI5646.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=3397 Contribution à l'élaboration de couches minces d'oxydes transparents conducteurs (TCO). [texte imprimé] / Fayssal Ynineb, Auteur ; N. Attaf, Directeur de thèse . - 16/05/2010 . - Constantine : Université Mentouri Constantine, 2010 . - 104 f. ; 30 cm.
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 : Sciences des matériaux: Semi-conducteurs DRX Résistivité électrique Couches minces TCO Spray ultrasonique Caractérisation optique Thin films TCO Ultrasonic spray Optical characterization Electrical resistivity الشرائح الرقیقة الرش فوق الصوتي الوصف الضوئي المقاومیة الكھربائیة Index. décimale : 530 Physique Résumé : Our work concerns the development and the characterization of the conducting transparent oxides thin films of: ZnO, SnO2 and In2O3, and their mixtures by the ultrasonic technique spray at 300°C.
In the first part of this thesis, we realized, in addition to pure oxides, a series of deposit containing ZnO by using the mixtures of: [ZnO:SnO2]
and [ZnO:In2O3]. In the second part, we realized another serie of oxides [SnO2:In2O3]. In the two parts we studied the influence of the rate mixture of components on the characteristics of films. These films are analyzed by various characterization techniques of materials. The structural characterization of films by analysis of the spectra of X-ray diffraction showed that the films based on the mixtures and containing ZnO present a preferential direction according to the plan (002) for the Rb1 series and (100) for the Rb2 series. In films of the series [SnO2:In2O3] the preferential orientation is along the axis (222) of In2O3. The UV-Visible spectrophotometer of these films confirms that it is possible to obtain good transparent films of TCO with a transmittance of about 75 to 85% in the visible range. The measurement of electric resistivity also confirmed the decrease of the electrical resistivity with mixtures to a value of 10-3 (Ω.cm).Note de contenu : Annexes. Diplôme : Magistère En ligne : ../theses/physique/YNI5646.pdf Format de la ressource électronique : Permalink : 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
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