Semiconducting polymer blends that exhibit stable charge transport at high temperatures.
basic_science · Level V
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- Record sourced from PubMed, PMID 30523104.
- Also identified by DOI 10.1126/science.aau0759.
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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 cm<sup>2</sup>/V·s across a wide temperature range from room temperature up to 220°C in thin-film transistors.