Full-fluorescence organic light-emitting diodes (FOLEDs) with low cost and high efficiency are imperious demands for commercial process in flat panel display and lighting products. We fabricated a series of FOLEDs employing C545T and DCJTB as doped dyes and different exciplex blends as cohosts. The results proved that reverse intersystem crossing (RISC) efficiency of exciplex cohost has a significant effect on the device performance. Devices with TAPC:PIM-TRZ as cohost which possessed the highest RISC efficiency showed the best results. The green FOLEDs exhibited the maximum external quantum efficiencies (EQEs) approaching to 20%, the red FOLEDs exhibited EQEs over 10% and all the EQE roll-offs are less than 10% at 1000 cd m⁻², which are among the best reported results so far, suggesting these exciplex cohosts are promising for FOLEDs.

低成本和高效率的全荧光有机发光二极管（FOLED）是平板显示器和照明产品中商业化处理的迫切需求。我们制造了一系列以C545T和DCJTB为掺杂染料，并以不同的exiplex混合物作为共宿主的FOLED。结果证明，激基复合物共宿主的反向系统间交叉（RISC）效率对器件性能具有重要影响。具有最高RISC效率的以TAPC：PIM-TRZ作为共宿主的设备显示出最佳结果。绿色FOLED的最大外部量子效率（EQE）接近20％，红色FOLED的EQE超过10％，并且所有EQE衰减在1000 cd m ^-2时均小于10％。，这是迄今为止报道最好的结果之一，表明这些激基复合物共宿主对于FOLED很有希望。