Novel heterofluorene-based hosts for highly efficient blue electrophosphorescence at low operating voltages

Run Feng Chen, Guo Hua Xie, Yi Zhao, Sheng Lan Zhang, Jun Yin, Shi Yong Liu, Wei Huang

科研成果: 期刊稿件文章同行评审

30 引用 (Scopus)

摘要

A novel concept for molecular design of blue host materials for phosphorescent OLEDs (PHOLEDs) by combining carbazole and heterofluorene via structurally mimicking 4,4′-N,N′-dicarbazole-biphenyl (CBP) was presented. The carbazole end-capped heterofluorenes (CzHFs) prepared accordingly in high yields, were found to be ideal hosts for blue PHOLEDs. At the brightness level of 1000 and 5000 cd m-2, the driving voltages are still lower than 4.5 V with the external quantum efficiencies retain as high as 18.1% and 16.8% respectively.

源语言英语
页(从-至)1619-1624
页数6
期刊Organic Electronics
12
10
DOI
出版状态已出版 - 10 10月 2011
已对外发布

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