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Synthesis and Evaluation of Scalable D-A-D ?-Extended Oligomers as p-Type Organic Materials for Bulk-Heterojunction Solar Cells.

ABSTRACT: The synthesis and characterization of four novel donor-acceptor-donor ?-extended oligomers, incorporating naphtha(1-b)thiophene-4-carboxylate or benzo(b)thieno(3,2-g) benzothiophene-4-carboxylate 2-octyldodecyl esters as end-capping moieties, and two different conjugated core fragments, is reported. The end-capping moieties are obtained via a cascade sequence of sustainable organic reactions, and then coupled to benzo(c)(1,2,5)thiadiazole and its difluoro derivative as the electron-poor ?-conjugated cores. The optoelectronic properties of the oligomers are reported. The novel compounds revealed good film forming properties, and when tested in bulk-heterojunction organic photovoltaic cell devices in combination with PC₆₁BM, revealed good fill factors, but low efficiencies, due to their poor absorption profiles.

SUBMITTER: Osw P

PROVIDER: S-EPMC7183272 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Synthesis and Evaluation of Scalable D-A-D π-Extended Oligomers as p-Type Organic Materials for Bulk-Heterojunction Solar Cells.

Osw Peshawa P Nitti Andrea A Abdullah Media N MN Etkind Samuel I SI Mwaura Jeremiah J Galbiati Alessandro A Pasini Dario D

Polymers 20200324 3

The synthesis and characterization of four novel donor-acceptor-donor π-extended oligomers, incorporating naphtha(1-b)thiophene-4-carboxylate or benzo(b)thieno(3,2-g) benzothiophene-4-carboxylate 2-octyldodecyl esters as end-capping moieties, and two different conjugated core fragments, is reported. The end-capping moieties are obtained via a cascade sequence of sustainable organic reactions, and then coupled to benzo(c)(1,2,5)thiadiazole and its difluoro derivative as the electron-poor π-conjug ...[more]

PMID: 32213915

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