Organic light-emitting device using new distyrylarylene host materials

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• 作者：Nack-Chul Seong ; Young-Min Jeon ; Tae-Ho Lim ; Joon-Woo Kim ; Chil-Won Lee ; En-Jung Lee ; Ji-Geun Jang ; Ho-Jeong Jang ; Joon-Young Lee ; Myoung-Seon Gong
• 关键词：OLED ; Distyrylarylene ; Blue host material
• 刊名：Synthetic Metals
• 出版年：2007
• 出版时间：June 2007
• 年：2007
• 卷：157
• 期：10-12
• 页码：421-426
• 全文大小：896 K

文摘

Novel distyrylarylene-based blue host materials, 4,4′-bis(1,2-diphenylvinyl)-p-terphenyl (2), 4,4′-bis[1-phenyl-2-(p-tolyl)vinyl]-p-terphenyl (3) and 4,4′-bis[1-phenyl-2-(4,4′-biphenyl)vinyl]-p-terphenyl (4) were successfully synthesized using 4,4′-bisbenzoyl-p-terphenyl (1) through Wittig–Hornor reaction and a blue organic light-emitting diode (OLED) was made from them. The structure of the blue device is ITO/DNTPD/NPB/Host:DSA-Ph/Alq₃/Al-LiF. Here, NPB is used as a hole transport layer, DNTPD as the hole injection layer, DSA-Ph as the blue dopant, Alq₃ as the electron transport layer and Al as the cathode. The blue device doped with 5 % -DSA-Ph shows a blue EL spectrum at 463 nm and a high efficiency of 4.14–5.13 cd/A.