The performance of white organic light-emitting devices has been improved significantly by incorporating a mixed-transition layer, consisting of the hole-transporting (or electron-transporting) layer doped with the emissive dye. These devices exhibit maximum current and power efficiencies of 13.3 cd/A and 11.3 lm/W, respectively (1.6 and 2 times higher than the corresponding values of devices without the mixed-transition layer), with slightly modified Commission Internationale De L’Eclairage coordinates, from (0.300, 0.371) to (0.312, 0.366). This is attributed to the enhancement of carrier transport by doping, thereby improving both the exciton formation probability and the charge transport balance.
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机译：通过掺入混合过渡层可以显着改善白色有机发光器件的性能，该过渡层由掺杂有发射染料的空穴传输（或电子传输）层组成。这些设备的最大电流和功率效率分别为13.3 cd / A和11.3 lm / W（比不带混合过渡层的设备的相应值高1.6和2倍），并略微修改了国际照明委员会的坐标，从（0.300，0.371）到（0.312，0.366）。这归因于通过掺杂来提高载流子传输，从而改善了激子形成概率和电荷传输平衡。
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