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

Beilstein Journal of Organic Chemistry

Ifor D. W. Samuel¹  Calvyn T. Howells¹  Upendra K. Pandey¹  Diego Cortizo-Lacalle²  Anto Regis Inigo²  Joseph Cameron²  Peter J. Skabara²  Neil J. Findlay²  Tell Tuttle² 

[1] Organic Semiconductor Centre, SUPA, School of Physics & Astronomy, University of St. Andrews, St. Andrews, KY16 9SS, UK;WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, G1 1XL, UK;

关键词: BODIPY;    diketopyrrolopyrrole;    organic semiconductors;    organic solar cells;    thiophene;   

DOI  :  10.3762/bjoc.10.283

来源: DOAJ

【 摘 要 】

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 PC71BM 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.

【 授权许可】

Unknown