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Communication Dans Un Congrès Année : 2017

Towards stable polymer solar cells

Résumé

Organic semiconductors are attracting a continuously increasing attention of the scientific community. They are based on molecules forming solid-state materials thanks to Van der Waals interactions for example. If these interactions are strong enough to create materials, they could be too weak to insure long-term stability of the materials. This communication will present our efforts in developing Pi-conjugated organic semiconductors that are crosslinkable, attaching molecules to each other’s with covalent bonds. On the one hand, the major part of this talk will show our recent work on organic solar cells. Efficient bulk-heterojunction polymer solar cells require an interpenetrating network of electron donor and acceptor materials. Indeed, the optimum phase segregation is thermally unstable. A versatile stabilization of the morphology of bulk heterojunctions incorporating crosslinkable additives blended in low amounts with polymer:fullerene has been achieved. Stable performances of solar cells after heating for days at low or high temperature are observed. This presentation will also display our latest results concerning the issue of stabilizing the interfaces and interlayers in such thin film solar cells. Our progress on hybrid-perovskite solar cells as well as recent approaches towards robust hybrid fully covalent field effect transistors will be presented.
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Dates et versions

hal-02526398 , version 1 (31-03-2020)

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  • HAL Id : hal-02526398 , version 1

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Guillaume Wantz. Towards stable polymer solar cells. Seminar at Univ. Toronto, invited by Prof. Tim Bender, May 2017, Toronto, Canada. ⟨hal-02526398⟩
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