Molecular engineering of phosphacycle-based thermally activated delayed fluorescence materials for deep-blue OLEDs

Jiyoung Lee; Naoya Aizawa; Takuma Yasuda

doi:10.1039/C7TC05709A

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Molecular engineering of phosphacycle-based thermally activated delayed fluorescence materials for deep-blue OLEDs†

Jiyoung Lee,*^a Naoya Aizawa

^a and Takuma Yasuda

*^ab

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* Corresponding authors

^a INAMORI Frontier Research Center (IFRC), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
E-mail: leejy@ifrc.kyushu-u.ac.jp, yasuda@ifrc.kyushu-u.ac.jp

^b Department of Applied Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

Abstract

To produce efficient deep-blue emitters, a new family of thermally activated delayed fluorescence (TADF) molecules based on dibenzo-fused phosphacycles was designed. OLEDs employing a phenothiaphosphine sulfide derivative as a TADF emitter displayed blue electroluminescence with a maximum external quantum efficiency of 13% and CIE color coordinates of (0.15, 0.23).

This article is part of the themed collection: Celebrating 50 years of Professor Fred Wudl’s contributions to the field of organic semiconductors

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Article information

DOI: https://doi.org/10.1039/C7TC05709A
Article type: Communication
Submitted: 13 Dec 2017
Accepted: 11 Jan 2018
First published: 23 Jan 2018

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J. Mater. Chem. C, 2018,6, 3578-3583

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Molecular engineering of phosphacycle-based thermally activated delayed fluorescence materials for deep-blue OLEDs

J. Lee, N. Aizawa and T. Yasuda, J. Mater. Chem. C, 2018, 6, 3578 DOI: 10.1039/C7TC05709A

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Journal of Materials Chemistry C

Molecular engineering of phosphacycle-based thermally activated delayed fluorescence materials for deep-blue OLEDs†

Abstract

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Molecular engineering of phosphacycle-based thermally activated delayed fluorescence materials for deep-blue OLEDs

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