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Issue 118, 2015
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Phenothiazine dioxide based high triplet energy host materials for blue phosphorescent organic light-emitting diodes

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Abstract

Donor–acceptor type high triplet energy host materials were derived from a phenothiazine dioxide based electron transport moiety and a carbazole based hole transport moiety. Three phenothiazine dioxide type materials, 10-(3,5-di(9H-carbazol-9-yl)phenyl)-10H-phenothiazine 5,5-dioxide (DCzPO), 10-(3′,5′-di(9H-carbazol-9-yl)-[1,1′-biphenyl]-3-yl)-10H-phenothiazine 5,5-dioxide (DCzmPPO), and 10-(3′,5′-di(9H-carbazol-9-yl)-[1,1′-biphenyl]-4-yl)-10H-phenothiazine 5,5-dioxide (DCzpPPO), could transport both holes and electrons effectively and showed high triplet energy for use in blue phosphorescent organic light-emitting diodes. Device optimization of the DCzPO, DCzmPPO, and DCzpPPO host based blue devices could realize high EQE of 24.3%.

Graphical abstract: Phenothiazine dioxide based high triplet energy host materials for blue phosphorescent organic light-emitting diodes

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Publication details

The article was received on 24 Sep 2015, accepted on 04 Nov 2015 and first published on 16 Nov 2015


Article type: Paper
DOI: 10.1039/C5RA19722H
RSC Adv., 2015,5, 97903-97909

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    Phenothiazine dioxide based high triplet energy host materials for blue phosphorescent organic light-emitting diodes

    I. H. Lee and J. Y. Lee, RSC Adv., 2015, 5, 97903
    DOI: 10.1039/C5RA19722H

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