Tuning emissive characteristics and singlet-triplet energy splitting of fluorescent emitters by encapsulation group modification: Yellow TADF emitter for solution-processed OLEDs with high luminance and ultraslow efficiency roll-off

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• 作者：Shaolong Gong¹ ; Jiajia Luo¹ ; Zian Wang ; Yifan Li ; Tianheng Chen ; Guohua Xie ; Chuluo Yang ; ^{clyang@whu.edu.cn}
• 关键词：Organic light-emitting diodes ; Thermally activated delayed fluorescence ; Solution-processed ; Ultraslow efficiency roll-off
• 刊名：Dyes and Pigments
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：139
• 期：Complete
• 页码：593-600
• 全文大小：2122 K
• 卷排序：139

文摘

Three fluorescent emitters were obtained by introducing various encapsulation groups into a blue TADF emissive core. These emitters exhibited tunable emissive color, different transient emissive behavior and good film-forming ability. A maximum EQE of 8.1% and a maximum luminance of 37300 cd m−2 with slow EQE roll-offs were achieved. This work would be instructive in the rational molecule design of solution-processed TADF materials.