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

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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.

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

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Article information


Submitted
27 Jul 2020
Accepted
23 Sep 2020
First published
24 Sep 2020

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2020, Advance Article
Article type
Edge Article

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

D. Yuan, M. A. Awais, V. Sharapov, X. Liu, A. Neshchadin, W. Chen, M. Bera and L. Yu, Chem. Sci., 2020, Advance Article , DOI: 10.1039/D0SC04068A

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