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Science. 2018 Dec 7;362(6419):1131-1134. doi: 10.1126/science.aau0759.

Semiconducting polymer blends that exhibit stable charge transport at high temperatures.

Author information

1
Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA.
2
Department of Physical & Biological Sciences-Chemistry and Biochemistry, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA.
3
SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
4
Charles D. Davidson School of Chemical Engineering, 480 Stadium Mall Drive, Purdue University, West Lafayette, IN 47906, USA. bsavoie@purdue.edu jgmei@purdue.edu.
5
Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN 47907, USA. bsavoie@purdue.edu jgmei@purdue.edu.

Abstract

Although high-temperature operation (i.e., beyond 150°C) is of great interest for many electronics applications, achieving stable carrier mobilities for organic semiconductors at elevated temperatures is fundamentally challenging. We report a general strategy to make thermally stable high-temperature semiconducting polymer blends, composed of interpenetrating semicrystalline conjugated polymers and high glass-transition temperature insulating matrices. When properly engineered, such polymer blends display a temperature-insensitive charge transport behavior with hole mobility exceeding 2.0 cm2/V·s across a wide temperature range from room temperature up to 220°C in thin-film transistors.

PMID:
30523104
DOI:
10.1126/science.aau0759

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