Extremely low-efficiency roll-off of phosphorescent organic light-emitting diodes at high brightness based on acridine heterocyclic derivatives
作者:Minyu Chen、Jiali Yang、Zhonghua Ye、Shuanglong Wang、Zhenyu Tang、Guo Chen、Yanqiong Zheng、Ying Shi、Bin Wei、Wai-Yeung Wong
DOI:10.1039/c8tc02739k
日期:——
utilization as host materials for phosphorescent organic light-emitting diodes (PhOLEDs) has been investigated. We have fabricated PhOLEDs using green bis(2-phenylpyridine)iridium(III) acetylacetonate as doped emitters and two hosting schemes, which are the single host system consisting of BzAc derivatives and the co-host system with 1,3-bis(carbazolyl)benzene. We found that the PhOLEDs with the co-host
三种新型主体材料IpCm-PhBzAc(1,3-(4-(12,12-二甲基苯并呋喃[3,2 - b ] ac啶-7(12 H)-基)苯基)-6-异丙基-4 H-色烯-4-one),DpAn-BzAc(2,10-(4-(12,12-二甲基苯并呋喃[3,2 - b ] ac啶-7(12 H)-基)苯基)-10-苯基蒽-9(10 H)-one)和DpTrz-BphBzAc(3,7-(4'-(4,6-diphenyl-1,3,5-triazin-2-yl)-[1,1'-biphenyl] -4-yl )-12,12-二甲基-7,12-二氢苯并呋喃[3,2- b[ac啶]已经被设计和合成,并且已经研究了它们作为磷光有机发光二极管(PhOLED)的主体材料的用途。我们使用绿色双(2-苯基吡啶)铱丙酮(III)乙酰掺杂的发射体和两种宿主方案制备了PhOLED ,这两种宿主方案是由BzAc衍生物组成的单宿主系统以及与1