| Title: |
Synthesis and Evaluation of Scalable D-A-D π-Extended Oligomers as p-Type Organic Materials for Bulk-Heterojunction Solar Cells. |
| Authors: |
Osw, Peshawa, Nitti, Andrea, Abdullah, Media N., Etkind, Samuel I., Mwaura, Jeremiah, Galbiati, Alessandro, Pasini, Dario |
| Source: |
Polymers (20734360); Mar2020, Vol. 12 Issue 3, p720, 1p, 2 Diagrams, 2 Charts, 3 Graphs |
| Subject Terms: |
SOLAR cells, PHOTOVOLTAIC cells, OLIGOMERS, ORGANIC electronics, MATERIALS |
| 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 PC61BM, revealed good fill factors, but low efficiencies, due to their poor absorption profiles. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
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