Polymer Featuring Thermally Activated Delayed Fluorescence As Emitter in Light-Emitting Electrochemical Cells

Overview

Journal J Phys Chem Lett

Publisher American Chemical Society

Specialty Chemistry

Date 2020 Jul 7

PMID 32628486

Citations 1

Authors

Petter Lundberg

Qiang Wei

Ziyi Ge

Brigitte Voit

Sebastian Reineke

Ludvig Edman

Affiliations

Soon will be listed here.

Abstract

Semiconducting polymers that feature thermally activated delayed fluorescence (TADF) can deliver a much desired combination of high-efficiency and metal-free electroluminescence and cost-efficient solution-based fabrication. A TADF polymer is thus a very good fit for the emitting compound in light-emitting electrochemical cells (LECs) because the commonly employed air-stabile and few-layer LEC architecture is well suited for such solution-based fabrication. Herein we report on the first LEC device based on a TADF polymer as the emitting species, which delivers a luminance of 96 cd m at 4 V and a current efficacy of 1.4 cd A and >600 cd m at 6 V, which is competitive with the performance of multilayer organic light-emitting diodes based on the same TADF polymer. We further utilize the established sensitivity of the emission of the TADF polymer to its environment to draw conclusions on the exciton populations in host-guest and host-free TADF LEC devices.

Citing Articles

Ionic multiresonant thermally activated delayed fluorescence emitters for light emitting electrochemical cells.

Karaman M, Gupta A, Madayanad Suresh S, Matulaitis T, Mardegan L, Tordera D Beilstein J Org Chem. 2022; 18:1311-1321.

PMID: 36225727 PMC: 9520854. DOI: 10.3762/bjoc.18.136.

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