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- W2889231567 abstract "Improving the charge-carrier mobility of conjugated polymers is important for developing high-performance, solution-processed optoelectronic devices. Although [1]benzothieno[3,2- b]benzothiophene (BTBT) has been frequently used as a high-performance p-type small molecular semiconductor and employed a few times as a building block for p-type conjugated polymers, it has never been explored as a donor moiety for high-performance n-type conjugated polymers. Here, BTBT has been conjugated with either n-type perylene diimide (PDI) or naphthalene diimide (NDI) units to generate a donor-acceptor copolymer backbone, for the first time. Charge-transport measurements of organic field-effect transistors show n-type dominant behaviors, with the electron mobility reaching ∼0.11 cm2 V-1 s-1 for PDI-BTBT and ∼0.050 cm2 V-1 s-1 for NDI-BTBT. The PDI-BTBT mobility value is one of the highest among the PDI-containing polymers. The high π-π stacking propensity of BTBT significantly improves the charge-carrier mobility in these polymers, as supported by atomic force microscopy and grazing incidence X-ray diffraction analyses. Phototransistor applications of these polymers in the n-type mode show highly sensitive photoresponses. Our findings demonstrate that incorporation of the BTBT donor unit within the rylene diimide acceptor-based conjugated polymers can improve the molecular ordering and electron mobility." @default.
- W2889231567 created "2018-09-07" @default.
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- W2889231567 date "2018-08-31" @default.
- W2889231567 modified "2023-10-14" @default.
- W2889231567 title "Organic n-Channel Transistors Based on [1]Benzothieno[3,2-<i>b</i>]benzothiophene–Rylene Diimide Donor–Acceptor Conjugated Polymers" @default.
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- W2889231567 doi "https://doi.org/10.1021/acsami.8b10831" @default.
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