"L'objectif de la thèse est d'étudier des dispositifs électrochromes sur support flexible. Ces systèmes ont une transmission dans le visible et le proche infra-rouge qui peut être modulée sous l'effet d'une tension électrique. Ils sont constitués d'un empilement de couches minces : - un film électrochrome à coloration cathodique à base de WO3, - une couche conductrice ionique au lithium, inorganique (LiPON) ou organique gélifiée, - une contre-électrode à coloration anodique (''LixNi0.5O'') ou optiquement passive (V2O5). Cet ensemble, compris entre deux électrodes conductrices transparentes est déposé sur PET. Les couches électrochromes et l'électrolyte inorganique sont déposés par pulvérisation cathodique. La corrélation entre paramètres de dépôt, propriétés électrochromes et propriétés structurales a été établie."
"The aim of this thesis was to study flexible electrochromic devices. They can modulate their visible and near infra-red transmittance under polarization. They are constituted of a stack of thin layers : i.) an electrochromic active layer based on nanocrystaline WO3, coloured under cathodic bias, ii.) a lithium-ion conducting electrolyte which can be based either on photopolymerizable organic constituents, or on an inorganic film (LiPON), iii.) an ion storage counter electrode, which can be either an anodic colouring material such as nanocrystalline ''LixNi0.5O'', or an optically passive oxide such as nanocristalline lamellar ''V2O5/TiO2''. This set of layers is sandwiched between two transparent conductive electrodes deposited on polyethyleneterephtalate flexible substrates. Electrochromic layers and inorganic electrolyte were deposited by cathodic sputtering. Correlation between deposition parameters, electrochromic properties and structural properties were established."
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Matériaux nanostructurés Thèses et écrits académiques.
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Pulvérisation cathodique Thèses et écrits académiques.
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