We report the synthesis of a new star-shaped π-conjugated oligomer, BDT(DPP)4, containing a benzodithiophene core and four diketopyrrolopyrrole arms. The thermal, electrochemical and optical properties are characterized and the results complemented by computational studies. The utility of the molecule is demonstrated in both solar cell and field-effect transistor devices. In the former, BDT(DPP)4 displays low efficiency when used as an acceptor in blends with poly(3-hexylthiophene) but exhibits promising performance as a donor, in blends with either a fullerene or a non-fullerene acceptor. In field-effect transistors BDT(DPP)4 exhibits typical p-type transistor behavior, which is in accordance with its better donor performance in solar cell devices.
|Original language||English (US)|
|Number of pages||8|
|Journal||Journal of Materials Chemistry C|
|State||Published - 2019|
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We thank the China Scholarship Council (CSC) via the CSC Imperial Scholarship, the Daphne Jackson Trust (supported by RSC and EPSRC), the Royal Society and the Wolfson Foundation (for Royal Society Wolfson Fellowship) and EPSRC (EP/L016702/1) for financial support.