Synthesis and evaluation of scalable D-A-D π-extended oligomers as p-type organic materials for bulk-heterojunction solar cells
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polymers-12-00720-v2.pdf
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Author(s)
Osw, Peshawa
Nitti, Andrea
Abdullah, Media N.
Etkind, Samuel I.
Mwaura, Jeremiah
Galbiati, Alessandro
Pasini, Dario
Date Issued
March 24, 2020
Journal
Polymers
Publisher
Multidisciplinary Digital Publishing Institute
Citation
Osw, Peshawa, et al., "Synthesis and evaluation of scalable D-A-D π-extended oligomers as p-type organic materials for bulk-heterojunction solar cells." Polymers 12, 3 (Mar. 2020): no. 720 doi 10.3390/polym12030720 ©2020 Author(s)
Version
Final published version
Abstract
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-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 PC[subscript 61]BM, revealed good fill factors, but low efficiencies, due to their poor absorption profiles. ©2020 keywords: cascade organic reactions; π-conjugated oligomers; direct arylation; organic electronics; fused aromatic rings; organic photovoltaics; bulk-heterojunction organic solar cells
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Research Laboratory of Electronics
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DOI of Published Version
https://doi.org/10.3390/polym12030720
