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Ultrathin solution-processed single crystals of thiophene-phenylene co-oligomers for organic field-effect devicesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 10 февраля 2018 г.
- Авторы: Glushkova A.V., Poimanova E.Y., Bruevich V.V., Luponosov Y.N., Ponomarenko S.A., Paraschuk D.Y.
- Журнал: Proceedings of SPIE - The International Society for Optical Engineering
- Том: 10365
- Год издания: 2017
- Издательство: SPIE, the International Society for Optical Engineering
- Местоположение издательства: Bellingham, WA, United States
- Первая страница: 1036504
- DOI: 10.1117/12.2273538
- Аннотация: Thiophene-phenylene co-oligomers (TPCO) single crystals are promising materials for organic light-emitting devices, e.g., light-emitting transistors (OLETs), due to their ability to combine high luminescence and efficient charge transport. However, optical confinement in platy single crystals strongly decreases light emission from their top surface degrading the device performance. To avoid optical waveguiding, single crystals thinner than 100 nm would be beneficial. Herein, we report on solution-processed ultrathin single crystals of TPCO and study their charge transport properties. As materials we used 1,4-bis(5’-hexyl-2,2’-bithiophene-5-yl)benzene (DH-TTPTT) and 1,4-bis(5’-decyl-2,2’-bithiophene-5-yl)benzene (DD-TTPTT). The ultrathin single crystals were studied by optical polarization, atomic-force, and transmission electron microscopies, and as active layers in organic field effect transistors (OFET). The OFET hole mobility was increased tenfold for the oligomer with longer alkyl substituents (DD-TTPTT) reaching 0.2 cm2/Vs. Our studies of crystal growth indicate that if the substrate is wetted, it has no significant effect on the crystal growth. We conclude that solution-processed ultrathin TPCO single crystals are a promising platform for organic optoelectronic field-effect devices. © 2017 SPIE. Downloading of the abstract is permitted for personal use only.
- Добавил в систему: Бруевич Владимир Васильевич