Synergy between Photoluminescence and Charge Transport Achieved by Finely Tuning Polymeric Backbones for Efficient Light-Emitting Transistor

Dafei Yuan; Mohammad A Awais; Valerii Sharapov; Xunshan Liu; Andriy Neshchadin; Wei Chen; Luping Yu

doi:10.1021/jacs.1c01659

Synergy between Photoluminescence and Charge Transport Achieved by Finely Tuning Polymeric Backbones for Efficient Light-Emitting Transistor

J Am Chem Soc. 2021 Apr 7;143(13):5239-5246. doi: 10.1021/jacs.1c01659. Epub 2021 Mar 23.

Authors

Dafei Yuan¹, Mohammad A Awais¹, Valerii Sharapov¹, Xunshan Liu¹, Andriy Neshchadin¹, Wei Chen², Luping Yu¹

Affiliations

¹ Department of Chemistry and the James Franck Institute, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, United States.
² Materials Science Division and Center for Molecular Engineering, Argonne National Laboratory, 9700 Cass Avenue, Lemont, Illinois 60439, United States.

PMID: 33755466
DOI: 10.1021/jacs.1c01659

Abstract

The lack of design principle for developing high-performance polymer materials displaying strong fluorescence and high ambipolar charge mobilities limited their performance in organic light-emitting transistors (OLETs), electrically pumped organic laser, and other advanced electronic devices. A series of semiladder polymers by copolymerization of weak acceptors (TPTQ or TPTI) and weak donors (fluorene (F) or carbazole (C)) have been developed for luminescent and charge transporting properties. It was found that enhanced planarity, high crystallinity, and a delicate balance in interchain aggregation obtained in the new copolymer, TPTQ-F, contributed to high ambipolar charge mobilities and photoluminescent quantum yield. TPTQ-F showed excellent performance in solution-processed multilayered OLET devices with an external quantum efficiency (EQE) of 5.3%.