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

Chunmiao Han, Liping Zhu, Fangchao Zhao, Zhen Zhang, Jianzhe Wang, Zhao‐Peng Deng, Hui Xu, Jing Li, Dongge Ma, Peng‐Fei Yan

Chemical Communications · 2014 · 36 citations · 18 references

Concepts

Abstract

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%.

References

18