Suppressing triplet state extension for highly efficient ambipolar phosphine oxide host materials in blue PHOLEDs

Suppressing triplet state extension for highly efficient ambipolar phosphine oxide host materials in blue PHOLEDs

A series of phosphine oxide hosts were constructed to investigate the influence of the triplet state extension in hosts on electrophosphorescence, in which DPESPOPhCz with the carbazolyl-localized triplet state endowed its blue-emitting PHOLEDs with favourable performance, including an external quan...

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Veröffentlicht in:Chemical communications (Cambridge, England) England), 2014-01, Vol.50 (20), p.2670-2672
Hauptverfasser: Han, Chunmiao, Zhu, Liping, Zhao, Fangchao, Zhang, Zhen, Wang, Jianzhe, Deng, Zhaopeng, Xu, Hui, Li, Jing, Ma, Dongge, Yan, Pengfei
Format: Artikel
Sprache:eng
Schlagworte:
Construction
Phosphine oxide
Quantum efficiency
Retarding
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Zusammenfassung:A series of phosphine oxide hosts were constructed to investigate the influence of the triplet state extension in hosts on electrophosphorescence, in which DPESPOPhCz with the carbazolyl-localized triplet state endowed its blue-emitting PHOLEDs with favourable performance, including an external quantum efficiency more than 13%.
ISSN:1359-7345
1364-548X
DOI:10.1039/c3cc49020c