Constructing diazacarbazole-bicarbazole bipolar hybrids by optimizing the linker group for high efficiency, low roll off electrophosphorescent devices
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- 作者：Xialei Lv ; Bo Wang ; Jianghong Tan ; Zhi Huang ; Qing Zhang ; Songpo Xiang ; Wei Liu ; Shaoqing Zhuang ; Lei Wang ; wanglei@mail.hust.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：OLED ; Bipolar hosts ; Diazacarbazole ; Low efficiency roll-off
- 刊名：Dyes and Pigments
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：136
- 期：Complete
- 页码：54-62
- 全文大小：1816 K
文摘
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Three new bipolar hosts with excellent thermal stability and high ET were designed and synthesized.
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The correlation between molecular structure and properties were studied systematically.
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The blue devices showed a maximum EQE of 20.0%, a low efficiency roll-off of 2% at the brightness of 1000 cd/m2.
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