Fully solution-processed and multilayer blue organic light-emitting diodes based on efficient small molecule emissive layer and intergrated interlayer optimization
Fully solution-processed and multilayer blue organic light-emitting diodes based on efficient small molecule emissive layer and intergrated interlayer optimization
复制标题
基于高效小分子发射层和集成层间优化的全溶液加工多层蓝色有机发光二极管
DOI：
10.1016/j.orgel.2015.08.026
复制
发表时间：
2015
影响因子：
3.2
通讯作者：
Wu Hongbin
中科院分区：
文献类型：
--
作者：
Xue Shanfeng;Qiu Xu;Yao Liang;Wang Lingling;Yao Mingming;Gu Cheng;Wang Yan;Xie Zengqi;Wu Hongbin
报道了一种基于荧光小分子和甲醇/水溶性共轭聚合物作为电子注入材料的高效、全溶液处理的蓝色有机电致发光器件。发光层为3，6-双具有蓝色荧光小分子的（9，9，9 ′，9 ′-四（6-（9 H-咔唑-9-基）己基）-9H，9 MobiH-[2，2 ′-联芴]-7-基）二苯并[B，d]噻吩5，5-二氧化物（OCSoC）和甲醇/水溶性聚合物聚[（9，9-双（30-（N，N-二甲基氨基）丙基）-2，7-芴）-alt-2，7-（9，9-二辛基芴）]（PFN）作为电子注入层（EIL）。所有的有机层都是从溶液旋涂的。采用溶液处理方法实现了具有发射层/电子注入层的多层器件结构，没有层间溶解问题。器件的性能表明，多层器件的最大发光效率比单层器件提高了约43%。PFN作为EIL材料在溶液加工的小分子OLED中的应用对器件性能的提高起着关键作用。
Efficient and fully solution-processed blue organic light-emitting diodes (OLEDs) based on fluorescent small-molecule and methanol/water soluble conjugated polymer as electron-injection material are reported. The emitting layer is 3,6-bis(9,9,9′,9′-tetrakis (6-(9H-carbazol-9-yl)hexyl)-9H,9′H-[2,2′-bifluoren]-7-yl)dib-nzo[b, d]thiophene 5, 5-dioxide (OCSoC) with a blue-fluorescent small-molecule, and a methanol/water soluble polymer poly[(9,9-bis(30-(N,N-dimethylamino)propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctyl-fluorene)] (PFN) acted as electron-injection layer (EIL). All the organic layers are spin-coated from solution. The multilayer device structure with emitting layer/electron-injection layer is achieved by solution-processed method without the dissolution problem between layers. The performances of the devices show that the maximum luminous efficiency of the multilayer device is increased about 43%, compared to the single-layer device. PFN acting as the EIL material plays a key role in the improvement of the device performance when used in solution-processed small-molecule OLEDs.