期刊
CHEMISTRY OF MATERIALS
卷 30, 期 15, 页码 5353-5361出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.8b02160
关键词
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资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- FRQNT international training program via the Centre quebecois sur le materiaux fonctionnels (CQMF)
- US NSF [DMR-1708450]
- Office of Naval Research [N00014-17-1-2203]
A high molecular weight alternating naphthalene diimidebithiophene copolymer (poly{[N,N'-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5'-(2,2'-bithiophene)} (PNDIOD-T2)) has been prepared by direct (hetero)arylation polymerization (DHAP). Its structure and properties were investigated in comparison with the Stille-prepared commercial analog, N2200. It was found that the new DHAP-derived PNDIOD-T2 and known N2200 have similar optical absorption spectra and HOMO/LUMO energy levels but slightly different H-1 NMR spectra. Inverted all-polymer solar cells using PNDIOD-T2 as the acceptor and PCE12 or PCE10 as the donor polymer showed slightly superior performances compared to similar N2200 devices. All-polymer solar cells with 7.3% efficiency could be achieved with PNDIOD-T2 blends without the use of a processing additive. These results demonstrate that low-cost and eco-friendly DHAP-based n-type semiconducting polymers are promising for developing high performance all-polymer solar cells.
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