Thiophene vs thiazole: Effect of the π-connector on the properties of phthalimide end-capped diketopyrrolopyrrole based molecular acceptors for organic photovoltaics. (February 2017)

• Record Type: Journal Article
• 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
• Is Part Of: Dyes and pigments. Volume 137(2017)
• Page Start: 576
• Page End: 583
• Publication Date: 2017-02
• Subjects: Small molecule -- Non-fullerene acceptors -- Inverted solar cells -- Bulk heterojunction -- Diketopyrrolopyrrole -- Organic photovoltaics; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2016.10.046
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: 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. Graphical abstract: Highlights: 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.