喷墨打印共混磷光有机小分子发光薄膜的聚集和相分离调控与器件性能研究

项目名称： 喷墨打印共混磷光有机小分子发光薄膜的聚集和相分离调控与器件性能研究

项目编号： No.51473161

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 邢汝博

作者单位： 中国科学院长春应用化学研究所

项目金额： 83万元

中文摘要： 喷墨打印共混磷光有机小分子发光薄膜中的聚集和相分离是制约器件电学性能提高的关键。理解喷墨打印共混磷光有机小分子发光薄膜聚集和相分离形成机理，掌握有效的调控方法，建立薄膜聚集和相分离与器件性能的关系，对打印器件的性能优化具有指导意义。本项目主要研究内容包括：（1）磷光主体/掺杂剂分子结构、溶剂溶解性和溶液状态、溶液到薄膜转变动力学过程对喷墨打印共混磷光有机小分子发光薄膜聚集和相分离行为的影响规律及其作用机理；（2）可抑制喷墨打印大面积有机小分子磷光薄膜聚集和相分离，提高薄膜聚集和相分离结构的区域分布一致性的热力学和动力学方法及其原理；（3）通过薄膜光物理和电学性质，建立薄膜聚集和相分离结构与器件电学性能的内在关联；（4）打印薄膜的聚集和相分离结构优化及与旋涂性能相当的有机小分子磷光器件的喷墨打印。

中文关键词： 喷墨打印；溶液加工小分子；聚集；相分离

英文摘要： Aggregation and phase separation are the main reason for performance loss of inkjet printed small molecule based phosphorescent organic light-emitting diodes used host/dopant blending as light-emitting films. The mechanism of aggregation and phase separation of phosphorescent organic light-emitting blending films need to be researched and used to explore solution for controlling of the degree of films aggregation and phase separation. This is important to guide device performance improvement through combine with the research about relationship between films aggregation and phase separation and device performance. The main research contents of this project include: (1) The effect of some key elements, include molecular structure of host/dopant, solvents solubility and solution dispersing state and films forming dynamics, on aggregation and phase separation of inkjet printed phosphorescent organic light-emitting blending films and its action mechanism. (2) Developing of thermodynamics and dynamics methods which can be used to suppress aggregation and phase separation and improve microstructure uniformity for inkjet printed large area phosphorescent organic light-emitting blending films. (3) Relationship between films aggregation and phase separation and device performance can be formed through research about films photophysics and electronic performance. (4) Inkjet printing of phosphorescent organic light-emitting diodes with similar performance compared with their spin-coated counterparts through adjustment of films aggregation and phase separation.

英文关键词： inkjet printing;solution processed small molecule;aggregation;phase separation