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Synthèse et formulation d’encres conductrices imprimables par jet d’encre pour l’électronique organique

Abstract : Considering large-scale development and fabrication of organic electronic devices, needs for low cost conductive printable materials are growing. These materials are designed to replace thin metallic layers deposited via gravure or thermal evaporation. The objective of the work presented in this report is to obtain a conductive and inkjet printable aqueous stable dispersion of polyaniline. Originality of this PhD work is to describe all the steps from the chemical synthesis of polyaniline starting from the monomer, until the integration of the conductive ink in an organic solar cell as a conductive top electrode, through formulation of the ink to meet inkjet printing requirements. During the first part of work dedicated to chemical synthesis of PANI, we managed to produce a nanostructured and conductive material, with controlled size and morphology, which was dispersed in water. This aqueous dispersion was formulated to meet inkjet printing requirements and break technological locks such as particle size in the PANI dispersion. Formulation step was then validated during printing trials, which allowed optimising shape of ejected droplets. Printed PANI thin layers showed sheet resistance below 1000 Ω/□ after 20 printing passes. Finally, conductive ink was printed as a top electrode in fully solution–processed printed organic solar cell.
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  • HAL Id : tel-01675982, version 2

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Maxime Le Bail. Synthèse et formulation d’encres conductrices imprimables par jet d’encre pour l’électronique organique. Electronique. Université de Bordeaux, 2015. Français. ⟨NNT : 2015BORD0360⟩. ⟨tel-01675982v2⟩

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