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Caractérisation, optimisation et comportement photochimique de couches actives de cellules photovoltaïques organiques à base de poly(3-hexylthiophène)

Abstract : This work was devoted to optimization, characterization and photochemical behavior of active layers of organic solar cells. The objective was to identify photo-ageing mechanisms in order to propose strategies to improve the stability of Poly (3-hexylthiophene) (P3HT)/[6,6]-phenyl-C61-butanoic acid methyl ester (PCBM) organic solar cells. The first axe of this work was devoted to the study of the influence of structural parameters of P3HT (molecular weight, regioregularity, purity …) firstly on its photochemical stability and secondly on the optimization of the performances of devices. In this goal, four different commercial P3HT were studied. They were first characterized accurately with different analytical techniques. The relationship between P3HT microstructure and photostability has been studied and relevant parameters influencing photodegradation have been identified. The second axe of this work was devoted to the photochemical stability of P3HT:PCBM blends on inert substrate, and then on buffer layers. Finally, the degradation of active layers in complete devices has been performed by making the “autopsy” of degraded solar cells.
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Submitted on : Monday, October 15, 2012 - 3:37:47 PM
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  • HAL Id : tel-00741958, version 1

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Aurélie Dupuis. Caractérisation, optimisation et comportement photochimique de couches actives de cellules photovoltaïques organiques à base de poly(3-hexylthiophène). Autre. Université Blaise Pascal - Clermont-Ferrand II, 2012. Français. ⟨NNT : 2012CLF22242⟩. ⟨tel-00741958⟩

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