Effect of the π-conjugation length on the properties and photovoltaic performance of A–π–D–π–A type oligothiophenes with a 4,8-bis(thienyl)benzo[1,2-b:4,5-b′]dithiophene core

Ni Yin, Lilei Wang, Yi Lin, Jinduo Yi, Lingpeng Yan, Junyan Dou, Hai-Bo Yang, Xin Zhao and Chang-Qi Ma

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Supporting Information

Supporting Information features experimental details about the synthesis of COOP-nHT-TBDT, the determination of molecular molar extinction coefficient of COOP-nHT-TBDT, the JV curves and EQE spectra of organic solar cells based on COOP-nHT-TBDT at different blend ratios, a JV comparison of devices based on 4:PC61BM and 4:PC71BM, UV–vis absorption spectra of COOP-nHT-TBDT:PC61BM blended films, as well as the NMR and MALDI–TOF MS spectra of COOP-nHT-TBDT.

Supporting Information File 1: Additional experimental data.
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