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DOE OSTI · 1737390

Foldable semi-ladder polymers: novel aggregation behavior and high-performance solution-processed organic light-emitting transistors

Yuan, Dafei·Awais, Mohammad A.·Sharapov, Valerii·Liu, Xunshan·Neshchadin, Andriy·Chen, Wei·Bera, Mrinal·Yu, Luping
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Abstract

A critical issue in developing high-performance organic light-emitting transistors (OLETs) is to balance the trade-off between charge transport and light emission in a semiconducting material. Although traditional materials for organic light-emitting diodes (OLEDs) or organic field-effect transistors (OFETs) have shown modest performance in OLET devices, design strategies towards high-performance OLET materials and the crucial structure–performance relationship remain unclear. Our research effort in developing cross-conjugated weak acceptor-weak donor copolymers for luminescent properties lead us to an unintentional discovery that these copolymers form coiled foldamers with intramolecular H-aggregation, leading to their exceptional OLET properties. An impressive external quantum efficiency (EQE) of 6.9% in solution-processed multi-layer OLET devices was achieved.

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Yuan, Dafei, Awais, Mohammad A., Sharapov, Valerii, Liu, Xunshan, Neshchadin, Andriy, Chen, Wei, Bera, Mrinal, Yu, Luping. 2020-09-24. Foldable semi-ladder polymers: novel aggregation behavior and high-performance solution-processed organic light-emitting transistors. https://doi.org/10.1039/d0sc04068a

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