Thiophene vs thiazole: Effect of the π-connector on the properties of phthalimide end-capped diketopyrrolopyrrole based molecular acceptors for organic photovoltaics

Two phthalimide end-capped diketopyrrolopyrrole based non-fullerene derivatives distinguished by the nature of the π-conjugated connector namely a thiophene or a thiazole ring were synthesized via direct arylation and evaluated as electron acceptor materials in air-processed inverted organic solar c...

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Bibliographic Details
Published in:Dyes and pigments 2017-02, Vol.137, p.576-583
Main Authors: Josse, Pierre, Chávez, Patricia, Dindault, Chloé, Dalinot, Clément, McAfee, Seth M., Dabos-Seignon, Sylvie, Tondelier, Denis, Welch, Gregory, Blanchard, Philippe, Leclerc, Nicolas, Cabanetos, Clément
Format: Article
Language:English
Subjects:
Bulk heterojunction
Chemical Sciences
Diketopyrrolopyrrole
Inverted solar cells
Material chemistry
Non-fullerene acceptors
Organic photovoltaics
Small molecule
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Summary:Two phthalimide end-capped diketopyrrolopyrrole based non-fullerene derivatives distinguished by the nature of the π-conjugated connector namely a thiophene or a thiazole ring were synthesized via direct arylation and evaluated as electron acceptor materials in air-processed inverted organic solar cells. It turns out that this simple chemical modification significantly impacts the energetics, the charge transport properties and consequently the photovoltaic performances. [Display omitted] •Synthesis and characterization of diketopyrrolopyrrole based molecular acceptors.•Comparison of the thiophene vs the thiazole as π-conjugated connector.•Impact on the electronic properties, charge carrier transport and devices performances.
ISSN:0143-7208
1873-3743
DOI:10.1016/j.dyepig.2016.10.046