Suppressing molecular aggregation in solution processed small molecule organic light emitting diodes
Suppressing molecular aggregation in solution processed small molecule organic light emitting diodes
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DOI：
10.1016/j.orgel.2013.11.015
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发表时间：
2014-01-01
影响因子：
3.2
通讯作者：
Colsmann, Alexander
中科院分区：
文献类型：
--
作者：
Hoefle, Stefan;Pfaff, Marina;Colsmann, Alexander
用于光电子器件的低分子量有机材料的溶液加工是一项具有挑战性的任务，这是由于通常强烈的分子聚集。我们提出了一种简便和通用的路线，用于抑制分子聚集在湿法沉积的有机发光二极管的发射层，通过纳入电子惰性聚合物。约10重量%的中等聚合物浓度仅导致电学性能的微小变化，而同时显著地改善了膜的形成并因此改善了器件的亮度。器件性能与具有相同器件架构的真空处理器件的性能相匹配。(C)2013爱思唯尔有限公司版权所有。
Solution processing of low-molecular weight organic materials for optoelectronic devices is a challenging task due to often strong molecular aggregation. We present a facile and universal route for suppressing the aggregation of molecules during wet-deposition of emission layers for organic light emitting diodes by incorporating electronically inactive polymers. Moderate polymer concentrations of about 10 wt.% lead to only minor changes of the electrical performance while at the same time improving the film formation and consequently the device luminance significantly. The device performance matches the performance of vacuum processed devices with the same device architecture. (C) 2013 Elsevier B.V. All rights reserved.