Elaboration de films minces électroluminescents à base de polymère conducteur électronique et de nanotubes de carbone

Le sujet de cette these se situe dans le contexte de l'electronique organique a base de polymeres conjugues et de nanotubes de carbone. Nous avons choisi la famille des polyfluorenes principalement en raison de leur emission dans le bleu, leur bon rendement quantique ainsi que pour la facilite avec laquelle on peut modifier leurs proprietes en greffant differents groupements fonctionnels sur la structure de base du fluorene. L'originalite des recherches effectuees au laboratoire concerne la structure des films electroluminescents que nous realisons. Leur principe de fonctionnement repose sur l'utilisation de nanotubes de carbone en tant que film support pour le depot du polymere. Le travail realise au cours de cette these a principalement consiste a elaborer des films de polymeres avec des epaisseurs et des taux de dopage controles a la surface des nanotubes de carbone en optimisant les divers parametres de synthese electrochimique. Nous avons egalement utilise des groupements fonctionnels pour ameliorer les performances du polyfluorene et augmenter la compatibilite entre les couches polymere/nanotubes de carbone. Dans cette optique, nous avons mis en œuvre l'utilisation de differents outils pour la caracterisation des proprietes des films. Les proprietes intrinseques des nanotubes de carbone ont donc pour effet de doper le polymere et d'ameliorer le transport des charges au sein des couches tout en maintenant les performances de luminescence dans le bleu des polyfluorenes.

• Publication year

  2015

• Venue

  Unknown venue

• Publication date

  2015-11-02

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  Open on Semantic Scholar

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  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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