Tetra-carbazole substituted spiro[fluorene-9,9′-xanthene]-based hole-transporting materials with high thermal stability and mobility for efficient OLEDs

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• 作者：Xiaozhong Liang^a ; Kexiang Wang^a ; Ruqin Zhang^a ; Ke Li^b ; Xiaoqing Lu^b ; Kunpeng Guo^a ; ^{guokunpeng@tyut.edu.cn} ; Hua Wang^a ; Yanqin Miao^a ; ^{miaoyanqin@tyut.edu.cn} ; Huixia Xu^a ; Zhongqiang Wang^a
• 关键词：OLED ; Hole-transport materials ; Carbazole ; Spiro[fluorene-9 ; 9&prime ; -xanthene] ; Thermal stability ; Hole mobility
• 刊名：Dyes and Pigments
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：139
• 期：Complete
• 页码：764-771
• 全文大小：956 K
• 卷排序：139

文摘

Two tetra-carbazole substituted spiro[fluorene-9,9′-xanthene] derivatives SFX-Cr1 and SFX-Cr2 were synthesized. Carbazole substituted positions influenced Tg and hole mobility significantly. Both of SFX-Cr1 and SFX-Cr2 showing higher thermal stability and hole mobility than NPB. EQE values of 15.9% and 16.3% were obtained in SFX-Cr1 and SFX-Cr2-based OLEDs.