کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1268544 | 972409 | 2008 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Bipyridyl substituted triazoles as hole-blocking and electron-transporting materials for organic light-emitting devices Bipyridyl substituted triazoles as hole-blocking and electron-transporting materials for organic light-emitting devices](/preview/png/1268544.png)
We have demonstrated bipyridyl substituted triazole derivatives (Bpy-TAZs) as an electron-transporting material for organic light-emitting devices (OLEDs). Substitution of triazole with bipyridyl is a good way to improve electron-transporting ability of triazoles with keeping good hole-blocking ability, which is a useful property of triazole derivatives. A Bpy-TAZ has high electron mobility of above 10−4 cm2/V s. Moreover, by employing one of Bpy-TAZs as a hole-blocking and electron-transporting material for phosphorescent OLEDs, lower operation voltage was achieved with keeping the same external quantum efficiency of electroluminescence (almost 10%) as compared with the conventional hole-blocking and electron-transporting bilayer consisting of bathocuproine and tris (8-hydroxyquinolinato) aluminum.
Journal: Organic Electronics - Volume 9, Issue 1, February 2008, Pages 77–84