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Issue 21, 2015
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Synthesis, characterization and device optimisation of new poly(benzo[1,2-b:4,5-b′]dithiophene-alt-thieno[3,4-d]thiazole) derivatives for solar cell applications

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Abstract

New alternating copolymers based on benzo[1,2-b:4,5-b′]dithiophene and thieno[3,4-d]thiazole derivatives have been synthesized by using different combinations of side chains and spacers in order to study their effect on the optical, electrochemical and photovoltaic properties. Optical and electrochemical characterization were performed and the resulting copolymers exhibit optical bandgaps ranging from 1.66 to 1.80 eV, HOMO energy levels between −5.19 and −5.30 eV and LUMO energy levels between −3.60 and −3.72 eV. Photovoltaic devices were fabricated and characterized after a careful optimization of the active layer fabrication by using different solvents, additives and acceptors. Following this process, PCEs up to 4.4% were obtained.

Graphical abstract: Synthesis, characterization and device optimisation of new poly(benzo[1,2-b:4,5-b′]dithiophene-alt-thieno[3,4-d]thiazole) derivatives for solar cell applications

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Publication details

The article was received on 03 Feb 2015, accepted on 14 Apr 2015 and first published on 15 Apr 2015


Article type: Paper
DOI: 10.1039/C5PY00164A
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Citation: Polym. Chem., 2015,6, 3956-3961

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    Synthesis, characterization and device optimisation of new poly(benzo[1,2-b:4,5-b′]dithiophene-alt-thieno[3,4-d]thiazole) derivatives for solar cell applications

    N. Allard, N. Zindy, P. Morin, M. M. Wienk, R. A. J. Janssen and M. Leclerc, Polym. Chem., 2015, 6, 3956
    DOI: 10.1039/C5PY00164A

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