Development of High-performance Organic Electroluminescent Devices Using Amorphous Molecular Materials

利用非晶分子材料开发高性能有机电致发光器件

基本信息

批准号：
06555261
负责人：
SHIROTA Yasuhiko
金额：
$ 3.78万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

Organic electroluminescent (EL) devices have received attention because of potential application to full color flat panel displays. There have been extensive studies on layred organic EL devices with the aim of achieving high brightness and multicolor emission. However, improvement in the luminance efficiency and durability of devices remains to be solved.We have been studying the synthesis, properties and applications of photo- and electro-active amorphous molecular materials which form readily amorphous glasses above room temperature. It is expected that the amorphous molecular materials function as hole transport materials of organic EL devices since they form stable amorphous film and exhibit relatively high hole drift mobility.In the present study, (1) we have designed and synthesized novel pi-electron starburst molecules and investigated the relationship between molecular structure and the ease of glass formation, glass stability, and glass-transition temperature, (2) we have investigated the hole transport properties of molecular glasses, and (3) we have fabricated layred organic EL devices using amorphous molecular materials as hole transport layr and found that the device exhibit significant durability. In addition, EL devices consisting of double hole transport layrs exhibits a high luminance efficiency. These results provide the novel strategy for developing organic EL devices with high stability and high luminance efficiency using amorphous molecular materials.

有机电致电（EL）设备由于可能应用于全彩色平板显示器而受到关注。已经进行了有关铺设有机设备的广泛研究，目的是实现高亮度和多色发射。然而，设备的亮度效率和耐用性的提高仍有待解决。我们一直在研究光 - 和电活动的无定形分子材料的合成，性质和应用，这些分子材料易于形成室温以上的无定形玻璃。 It is expected that the amorphous molecular materials function as hole transport materials of organic EL devices since they form stable amorphous film and exhibit relatively high hole drift mobility.In the present study, (1) we have designed and synthesized novel pi-electron starburst molecules and investigated the relationship between molecular structure and the ease of glass formation, glass stability, and glass-transition temperature, (2) we have investigated the hole transport properties of分子玻璃和（3）我们使用无定形分子材料作为孔运输Layr制造了铺设有机设备，并发现该设备表现出明显的耐用性。此外，由双孔运输路线组成的EL设备表现出高亮度效率。这些结果为使用无定形分子材料开发具有高稳定性和高亮度效率的有机EL设备提供了新的策略。