Solution processable diketopyrrolopyrrole (DPP) cored small molecules with BODIPY end groups as novel donors for organic solar cells

Two novel triads based on a diketopyrrolopyrrole (DPP) central core and two 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) units attached by thiophene rings have been synthesised having high molar extinction coefficients. These triads were characterised and used as donor materials in small mole...

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Detalles Bibliográficos
Autores principales: Cortizo-Lacalle, Diego, Howells, Calvyn T, Pandey, Upendra K, Cameron, Joseph, Findlay, Neil J, Inigo, Anto Regis, Tuttle, Tell, Skabara, Peter J, Samuel, Ifor D W
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2014
Materias:
Full Research Paper
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4273300/
https://www.ncbi.nlm.nih.gov/pubmed/25550732
http://dx.doi.org/10.3762/bjoc.10.283
Descripción
Sumario:Two novel triads based on a diketopyrrolopyrrole (DPP) central core and two 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) units attached by thiophene rings have been synthesised having high molar extinction coefficients. These triads were characterised and used as donor materials in small molecule, solution processable organic solar cells. Both triads were blended with PC(71)BM as an acceptor in different ratios by wt % and their photovoltaic properties were studied. For both the triads a modest photovoltaic performance was observed, having an efficiency of 0.65%. Moreover, in order to understand the ground and excited state properties and vertical absorption profile of DPP and BODIPY units within the triads, theoretical DFT and TDDFT calculations were performed.

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