基于苝的非掺杂荧光白色有机电致发光器件

采用两种经典传统荧光材料作为发光层,制备了非掺杂白色有机电致发光器件(WOLEDs).在器件中两层苝(perylene)以薄层的方式分别置于双极性主体材料CBP(4,4’-di (N-carbazole)biphyenyl)两侧作为蓝光发射体,一层超薄的红荧烯(rubrene)插入CBP中作为橙光发射体.通过改变rubrene在CBP中的插入位置获得了高效率白色荧光器件,最高电流效率为6.6 cd/A(外量子效率为2.6%),最高亮度为18 480 cd/m²,且其中一种器件在200 mA/cm²的高电流密度下,CIE(commission internationale de l’eclairage)色坐标可达理想白光平衡点(0.33,0.33).

Non-doped fluorescent white organic electroluminescent device based on perylene

By using two typical traditional fluorescent materials as the light-emitting layer, an non-doped all fluorescent white organic light-emitting diode (WOLED) is fabricated. In the device, two thin layers of perylene are located at both sides of ambipolar host material CBP (4,4’-N,N′-dicarbazole-biphyenyl) as blue emitters, an ultra-thin rubrene layer inserted into CBP as orange emitter. A simple and efficient OLED is obtained by varying the insertion position of rubrene in CBP, the highest current efficiency is 6.6 cd/A (external quantum efficiency is 2.6%), the maximum brightness is18 480 cd/m²,and Commission Internationale de l’Eclairage (CIE) co-ordinates can reach the ideal white light equilibrium point (0.33, 0.33) at a current density of 200 mA/cm².