4.6 Article

Non-Doped Deep-Blue OLEDs Based on Carbazole-π-Imidazole Derivatives

期刊

MATERIALS
卷 14, 期 9, 页码 -

出版社

MDPI
DOI: 10.3390/ma14092349

关键词

OLED; deep-blue emission; carbazole; imidazole

资金

  1. Tianjin Research Program of Application Foundation and Advanced Technology [18JCZDJC37500]

向作者/读者索取更多资源

In this study, four bipolar blue-emitting materials were designed and synthesized, with carbazole, imidazole, and biphenyl as donor, acceptor, and p bridge, respectively. The incorporation of twisted phenylimidazole acceptor and appropriate substituents on the carbazole donor led to the successful development of a high-performance deep-blue OLED.
In this work, we designed and synthesized four bipolar blue-emitting materials with carbazole, imidazole, and biphenyl as donor, acceptor, and p bridge, respectively. The twisted phenylimidazole acceptor leads to a wider band-gap and hence deeper blue emission than the conjugated phenanthrimidazole acceptor. For the substituents on the carbazole donor, the t-butyl group could prevent the intramolecular charge transfer (ICT) process more effectively than the methoxy group. A non-doped deep-blue organic light-emitting diodes (OLED) is obtained with CIE coordinates of (0.159, 0.080), a maximum luminance of 11,364 cd/m(2), and a maximum EQE of 4.43%.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据