Highly Efficient Blue Organic Light-Emitting Diodes Based on 2-(Diphenylamino)fluoren-7-ylvinylarene Derivatives that Bear a tert-Butyl Group
作者:Kum Hee Lee、Young Soo Kwon、Jin Yong Lee、Sunwoo Kang、Kyoung Soo Yook、Soon Ok Jeon、Jun Yeob Lee、Seung Soo Yoon
DOI:10.1002/chem.201100304
日期:2011.11.11
examined through the fabrication of multilayer devices with a structure of indium–tin oxide, 4,4′‐bisN‐[4‐(N,N‐di‐m‐tolylamino)phenyl]‐N‐phenylamino}biphenyl, 4′‐bis[N‐(1‐naphthyl)‐N‐phenylamino]biphenyl, and blue materials doped in 2‐methyl‐9,10‐di(2‐naphthyl)anthracene/tris(8‐quinolinolato)aluminum/LiF/Al. All devices exhibit highly efficient blue electroluminescence with high external quantum efficiency
合成了带有2-(二苯基氨基)芴-7-乙烯基乙烯基芳烃发射单元和基于叔丁基的封端单元的蓝色荧光材料。这些材料的光物理特性,包括紫外线/可见光吸收,光致发光特性和HOMO-LUMO能级,已通过量子力学DFT计算进行了表征和合理化。这些分子的电致发光性质分别通过多层器件的制造中研究了与铟锡氧化物的结构,4,4'-双 ñ - [4-(N,N-二-米-tolylamino)苯基] - ñ -苯基氨基}联苯,4'-双[ N-(1-萘基)-N-苯基氨基]联苯和蓝色材料掺杂在2-甲基-9,10-二(2-萘基)蒽/三(8-喹啉酮基)铝/ LiF / Al中。所有器件都具有高效的蓝色电致发光和高外部量子效率(在20 mA cm -2时为3.20–7.72%)。一种深蓝色设备,其国际照明委员会(CIE)坐标为(0.15,0.11 ),使用7- [2-(3',5'-二叔丁基联苯-4-基)乙烯基] -9在发射层中作为掺杂剂的,9-二乙基-2-