Diarylamino group-containing copolymer, organic electroluminescent device, and method of producing hole transport layer for organic electroluminescent device
申请人:Kato Shinji
公开号:US20050008893A1
公开(公告)日:2005-01-13
An organic electroluminescent device is provided which has a high degree of adhesion between an anode and a hole transport layer, the device emitting light of high luminance even when driven by low applied voltages. Copolymers useful in hole transport layers in organic electroluminescent devices are also provided. Methods of producing hole transport layers for organic electroluminescent devices which can emit light of high luminance even when driven by low applied voltages are also provided, the hole transport layers having high degrees of adhesion with anode. A copolymer comprises a monomer unit including in its structure an electron-donating N,N-diaryl-substituted amino group such as an N,N-diphenylaminophenyl group, or a group having an N,N-diaryl-substituted amino moiety, and a monomer unit having at least one functional group. Also, a hole transport layer, which has excellent thickness accuracy, has an extremely smooth surface, and is very thin, can be formed of this copolymer or a copolymer having the same hole transport functional group. An organic electroluminescent device, which emits light of high luminance even when driven by low applied voltages, can be obtained by using this hole transport layer.
提供了一种有机电致发光器件,其阳极和空穴传输层之间具有高度的粘附性,即使在低电压驱动下也能发出高亮度的光。还提供了在有机电致发光器件中用于空穴传输层的共聚物。还提供了制备空穴传输层的方法,该方法可以在低电压驱动下发出高亮度的光,空穴传输层与阳极具有高度的粘附性。共聚物包括一个单体单元,其结构中包括一个电子给体的N,N-二芳基取代氨基,例如N,N-二苯基氨基苯基基团,或具有N,N-二芳基取代氨基基团的基团,以及至少具有一个功能基团的单体单元。此共聚物或具有相同空穴传输功能基团的共聚物可以形成具有优异厚度精度、极其光滑表面且非常薄的空穴传输层。通过使用此空穴传输层,可以获得发出高亮度光的有机电致发光器件,即使在低电压驱动下也能发光。