期刊
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
卷 32, 期 8, 页码 10194-10208出版社
SPRINGER
DOI: 10.1007/s10854-021-05675-2
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资金
- Vietnam National Foundation for Science and Technology Development (NAFOSTED) [104.02-2017.339]
This study reported the successful synthesis of novel low-bandgap D-A conjugated polymer derivatives, which exhibit a wide absorption spectrum in visible light region and low bandgaps, as well as high thermal stability, making them very promising as key materials for organic solar cells.
Diketopyrrolopyrrole (DPP) is one of the most used moieties in D-A conjugated polymers for high-performance pi-extended conjugated polymer-based organic solar cells. The combination of 1,4-diketo-3,6-dithienylpyrrolo[3,4-c]pyrroles (DTDPPs) and the donor moieties 10-(4-((2-ethylhexyl)oxy)phenyl)-10H-phenothiazine (M-1), 10-(4-((2-ethylhexyl)oxy)phenyl)-10H-phenoxazine (M-2), has not been reported yet. In this report, novel low-bandgap D-A conjugated polymer derivatives including DTDPP, phenothiazine and phenoxazine were successfully synthesized via direct (hetero) arylation polymerization with in the yields of 40.94-60.77%. The obtained D-A conjugated polymers named poly(3,6-Di(2-thienyl)pyrrolo[3,4-c]pyrrole-1,4-dione)-alt-(10-(4-((2-ethylhexyl)oxy) phenyl)-10H-phenothiazine) (P-1) and poly(3,6-Di(2-thienyl)pyrrolo[3,4-c]pyrrole-1,4-dione)-alt-(10-(4-((2-ethylhexyl)oxy) phenyl)-10H-phenoxazine) (P-2) exhibited a wide range of absorption spectrum in visible light region and have a low bandgaps of 1.4-1.5 eV, as well as thermal stabilities, these D-A conjugated polymers are very promising as activated polymeric materials for organic solar cells (OSCs).
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