| 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) |
| Tags : |
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 : |
pdf |
| 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)
| Tags : |
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 : |
pdf |
| Permalink : |
https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10117 |
|
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