Issue 19, 2023

Simple excited-state modification toward a deep-blue hybridized local and charge-transfer (HLCT) fluorophore and non-doped organic light-emitting diodes

Abstract

Realizing high-performance deep-blue fluorophores and non-doped organic light-emitting diodes (OLEDs) with the Commission International de I’Eclairage (CIE) coordinates of CIEy < 0.046 is an important and challenging task for wide color-gamut displays. In this work, we report an efficient deep-blue hybridized local and charge-transfer (HLCT) fluorescent material with considerable fluorescence quantum yield and bipolar-transporting characteristics by managing the excited state and charge-transporting properties via a simple and novel acceptor p-difluorobenzene. The resulting non-doped OLED not only shows a high external quantum efficiency of 5.62%, but also exhibits stable deep-blue emission with the CIE coordinates of (0.163, 0.035) and a narrow full-width at half-maximum of 50 nm. This should be one of the state-of-the-art efficiencies achieved in the non-doped OLEDs with a CIEy of less than 0.046.

Graphical abstract: Simple excited-state modification toward a deep-blue hybridized local and charge-transfer (HLCT) fluorophore and non-doped organic light-emitting diodes

Supplementary files

Article information

Article type
Paper
Submitted
15 Feb 2023
Accepted
14 Apr 2023
First published
14 Apr 2023

J. Mater. Chem. C, 2023,11, 6347-6353

Simple excited-state modification toward a deep-blue hybridized local and charge-transfer (HLCT) fluorophore and non-doped organic light-emitting diodes

Y. Huo, J. Lv, M. Wang, Z. Duan, H. Qi, S. Wang, Y. Liu, L. Peng, S. Ying and S. Yan, J. Mater. Chem. C, 2023, 11, 6347 DOI: 10.1039/D3TC00574G

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