Construction and performance of OLED devices prepared from liquid-crystalline TADF materials

Alfiya F. Suleymanova, Marsel Z. Shafikov, Xinrui Chen, Yafei Wang*, Rafal Czerwieniec, Duncan W. Bruce

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The device performance is reported for three compounds which show both thermally activated delayed fluorescence and liquid crystallinity, and use the donor 3,6-bis(3,4-didodecyloxyphenyl)carbazole. Two of the compounds, whose photophysics were reported previously, are based on a terephthalonitrile acceptor. A third and new compound is based on an isophthalonitrile acceptor and shows a more temperature-accessible mesophase and enhanced solution emission quantum yield. Two of the compounds show device external quantum efficiencies of between 2-3% and exhibit very small efficiency roll off. The responses are evaluated in terms of the specific nature of the materials.

Original languageEnglish
Pages (from-to)22115 - 22121
Number of pages6
JournalPhysical chemistry chemical physics
Volume24
DOIs
Publication statusPublished - 28 Aug 2022

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