Matches in SemOpenAlex for { <https://semopenalex.org/work/W2904758312> ?p ?o ?g. }
- W2904758312 abstract "Highly efficient nonfullerene polymer solar cells (PSCs) are developed based on two new phthalimide-based polymers phthalimide-difluorobenzothiadiazole (PhI-ffBT) and fluorinated phthalimide-ffBT (ffPhI-ffBT). Compared to all high-performance polymers reported, which are exclusively based on benzo[1,2-b:4,5-b']dithiophene (BDT), both PhI-ffBT and ffPhI-ffBT are BDT-free and feature a D-A1-D-A2 type backbone. Incorporating a second acceptor unit difluorobenzothiadiazole leads to polymers with low-lying highest occupied molecular orbital levels (≈-5.6 eV) and a complementary absorption with the narrow bandgap nonfullerene acceptor IT-4F. Moreover, these BDT-free polymers show substantially higher hole mobilities than BDT-based polymers, which are beneficial to charge transport and extraction in solar cells. The PSCs containing difluorinated phthalimide-based polymer ffPhI-ffBT achieve a substantial PCE of 12.74% and a large Voc of 0.94 V, and the PSCs containing phthalimide-based polymer PhI-ffBT show a further increased PCE of 13.31% with a higher Jsc of 19.41 mA cm-2 and a larger fill factor of 0.76. The 13.31% PCE is the highest value except the widely studied BDT-based polymers and is also the highest among all benzothiadiazole-based polymers. The results demonstrate that phthalimides are excellent building blocks for enabling donor polymers with the state-of-the-art performance in nonfullerene PSCs and the BDT is not necessary for constructing such donor polymers." @default.
- W2904758312 created "2018-12-22" @default.
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- W2904758312 date "2018-12-12" @default.
- W2904758312 modified "2023-10-14" @default.
- W2904758312 title "Phthalimide‐Based High Mobility Polymer Semiconductors for Efficient Nonfullerene Solar Cells with Power Conversion Efficiencies over 13%" @default.
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- W2904758312 doi "https://doi.org/10.1002/advs.201801743" @default.
- W2904758312 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6343056" @default.
- W2904758312 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30693192" @default.
- W2904758312 hasPublicationYear "2018" @default.
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