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Poly(thiophenes) derivatized with oligo(oxyethylene) chains as donor materials for organic solar cells

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Sep 2009Publisher:Elsevier BVJournal:Solar Energy Materials and Solar Cells, volume 93, pages 1,624-1,629 (issn: 0927-0248,

Authors: Bricaud, Quentin; Cravino, Antonio; Leriche, Philippe; Roncali, Jean;

doi: 10.1016/j.solmat.2009.04.018

Poly(thiophenes) derivatized with oligo(oxyethylene) chains as donor materials for organic solar cells

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Abstract

Regioregular poly[3-(3,6-dioxaheptyl)thiophene] (PDHT) has been synthesized by Grignard metathesis (GRIM). The UV–vis absorption spectrum of spin-cast films of PDHT presents a well-resolved vibrational fine structure typical of well-ordered polymers. The characterization of bulk heterojunction solar cells fabricated using PCBM as acceptor shows that PDHT leads to power conversion efficiencies in ca 4–5 times lower than that obtained with regioregular poly(3-hexylthiophene) (P3HT). In contrast, the characterization of bilayer solar cells realized by thermal evaporation of C60 on spin-cast polymer films shows that PDHT leads to performances similar or even better than P3HT both before and after thermal treatment.

Related Organizations

University of Angers
France
French National Centre for Scientific Research
France

Keywords

Morphology, Bulk heterojunction, external quantum efficiency, Polythiophenes, [CHIM]Chemical Sciences

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