Title: �tude microstructurale de gels et de couches minces de SnO2: �laboration par voie sol-gel (Omn.Univ.Europ.) (French Edition)
Publisher: Editions universitaires europeennes
Publication Date: 2011
Language: French
ISBN 10: 3841783465
ISBN 13: 9783841783462
Binding: Soft cover
Condition: New

About this title

Synopsis

Ce travail est consacr� � l’�laboration par voie sol-gel de gels et de couches minces de SnO2 � partir d’alkoxydes et de sels d’�tain modifi�s. L’�tude de la g�lification a concern� plus particuli�rement les gels pr�par�s dans un solvant mixte tolu�ne/isopropanol. Bien que la cin�tique de g�lification soit consid�rablement influenc�e par le taux de complexation et par la concentration en alkoxyde, ces deux param�tres n’ont pas d’effet notable sur la structure finale des gels. Au contraire, cette derni�re est remarquablement d�pendante du taux de tolu�ne. Nous avons d’autre part �tudi� les processus de croissance granulaire et de texturation au sein des couches minces r�alis�es � partir de ces pr�curseurs. A basse temp�rature, la croissance granulaire est r�gie par un m�canisme de diffusion de surface alors qu’au-del� de 1100�C c’est le processus d’�vaporation-condensation qui pr�domine. Parall�lement, � cette croissance granulaire, on observe une texturation progressive des couches.

About the Author

Apr�s un an Postdoctorial � l'universit� Paris VI Pierre et Marie Curie, Je suis actuellement ATER au coll�ge de France de Paris. Docteur, titulaire d'un Master 2 en chimie inorganique de l'universit� Claude Bernard Lyon1 et d'un doctorat en sciences de proc�d�s c�ramiques et de traitement de surface de l'universit� de Limoges

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