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Nouveaux nanomatériaux pour la fabrication d'électrodes flexibles transparentes

Abstract : Transparent electrodes are implanted in a lot of devices such as solar cell, OLED, touch screen or transparent film heater. Market trends toward flexible devices lead replacement of the well known brittle ITO. Metallic nanowire (NW) based percolative networks are a promising alternative in terms of performances, cost and flexibility. Indeed, the widely reported silver NWs exhibited really high optoelectrical performances. The objective of this thesis is to develop new NW based transparent electrodes with other metal. Among metals, copper is the most promising because of its high conductivity and its price one hundred times cheaper. In that manuscript, we detail different synthesis of copper nanowire (CuNW), their printing to get the related performances. Then ageing under environmental stresses (dry air, sun and humidity) will be studied. Stability of CuNW into networks is very low compared to silver, to improve stability of CuNW two strategies based on capping layer on top of CunW and on core-shell nanostructure will be presented. Operating stability into transparent film heater will also be reported.
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Submitted on : Wednesday, May 30, 2018 - 2:20:20 PM
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Anthony Cabos. Nouveaux nanomatériaux pour la fabrication d'électrodes flexibles transparentes. Science des matériaux [cond-mat.mtrl-sci]. Université Grenoble Alpes, 2017. Français. ⟨NNT : 2017GREAI116⟩. ⟨tel-01763643v2⟩

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