Issue 2, 2014
From the journal:

Materials Horizons

A six-carbazole-decorated cyclophosphazene as a host with high triplet energy to realize efficient delayed-fluorescence OLEDs†

Takuro Nishimoto,a   Takuma Yasuda,*abc   Sae Youn Lee,a   Ryosuke Kondoa  and  Chihaya Adachi*ab  

* Corresponding authors

a Department of Applied Chemistry, Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
E-mail: yasuda@cstf.kyushu-u.ac.jp, adachi@cstf.kyushu-u.ac.jp
Fax: +81 92-802-6921

b International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Japan

c PRESTO, Japan Science and Technology Agency (JST), Chiyoda-ku, Tokyo 102-0076, Japan

Abstract

A high triplet energy (ET) host material, hexakis(9H-carbazol-9-yl)cyclotriphosphazene (PzCz), is used in high-efficiency organic light-emitting diodes (OLEDs). PzCz (ET = 3.00 eV) functions as an effective host for thermally activated delayed fluorescence (TADF) molecules. Highest external electroluminescence quantum efficiencies over 15% and 18% are achieved for blue-green and green TADF-OLEDs, respectively.

Graphical abstract: A six-carbazole-decorated cyclophosphazene as a host with high triplet energy to realize efficient delayed-fluorescence OLEDs

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Article information

DOI
https://doi.org/10.1039/C3MH00079F
Article type
Communication
Submitted
08 aug 2013
Accepted
10 sep 2013
First published
26 sep 2013

Mater. Horiz., 2014,1, 264-269

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A six-carbazole-decorated cyclophosphazene as a host with high triplet energy to realize efficient delayed-fluorescence OLEDs

T. Nishimoto, T. Yasuda, S. Y. Lee, R. Kondo and C. Adachi, Mater. Horiz., 2014, 1, 264 DOI: 10.1039/C3MH00079F

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