Nanotubes de carbones semi-conducteurs pour cellules solaires organiques

Léa Darchy 1
1 LISO - Laboratoire Interfaces et Surfaces d'Oxydes
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
Abstract : Carbon nanotubes (CNT) are a promising material for organic electronics whether as conductor or semiconductor. However, applications of semiconductor CNTs are longer to emerge because of the simultaneous synthesis of metallic and semiconductor CNTs. The approach of our laboratory is to remove the conductivity of metallic CNTs with a chemical and selective functionalization to avoid the separation of the two types of CNTs. This work involved adapting and using the CNT semiconductor material obtained after functionalization in the active layer of organic solar cells. The approach is organized in four parts with first the purification of CNTs in large batch to have an abundant material in solution and the adaptation of the chemical and selective functionalization of metallic CNTs. The diazoether coupling allows obtaining selectivity greater than 15 versus 4 to 10 for the diazonium and diazoester reactants. In the second part, the physicochemical study of the CNT-donor material (P3HT or oligomer QTF8) composite brought out the strong affinity and structuration of the donor material around the CNTs. Finally the effect of the incorporation and orientation of functionalized CNTs in the composite is studied in transistors and organic solar cells. The integration of CNTs in bulk-heterojunction solar cell led in particular to the design of a novel configuration of solar cell more adapted to the orientation of CNTs.
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Submitted on : Tuesday, December 17, 2013 - 10:27:43 AM
Last modification on : Thursday, January 24, 2019 - 1:14:02 AM
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  • HAL Id : pastel-00919656, version 1

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Léa Darchy. Nanotubes de carbones semi-conducteurs pour cellules solaires organiques. Matériaux. Ecole Polytechnique X, 2013. Français. ⟨pastel-00919656⟩

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