BINIEK, Laure; CHOCHOS, Christos L.; HADZIIOANNOU, Georges; LECLERC, Nicolas; LEVEQUE, Patrick; HEISER, Thomas

doi:10.1002/marc.200900804

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BINIEK, Laure

CHOCHOS, Christos L.

HADZIIOANNOU, Georges

Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

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Macromolecular Rapid Communications. 2010, vol. 31, n° 7, p. 651-656

Wiley-VCH Verlag

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A series of donor-acceptor alternated conjugated copolymers, composed of thiophene, bithio-phene, thieno[3,2-b]thiophene, and 2,1,3-benzothiadiazole units and differing from each other by the nature and the number of 3-alkylthiophene in the backbone, have been synthesized by Stille cross-coupling polymerization. The material's optical and electrochemical properties, in solution and in thin films, have been investigated using UV-Visible absorption and cyclic voltammetry. Bulk heterojunction solar cells using blends of the newly synthesized copolymers, as electron donor, and C60-PCBM or C70-PCBM, as electron transporting material, have been elaborated. A maximum power conversion efficiency of 1.8% is achieved with a 1:4 PPBzT(2)-C12:C70-PCBM weight ratio.< Réduire

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photovoltaics

open circuit voltage

bulk heterojunction

conjugated polymers

low-band gap copolymer

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Electronic Properties and Photovoltaic Performances of a Series of Oligothiophene Copolymers Incorporating Both Thieno[3,2-b]thiophene and 2,1,3-Benzothiadiazole Moieties

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