In this study, a feasible device design strategy was reported to achieve efficient blue and white fluorescent organic light-emitting diodes by exploiting a conventional electron transport material as blue emitter. A series of devices were fabricated and investigated by selecting closely matched host materials. The doped blue emitter molecules within a hole dominant light-emitting layer function as both emitting centers and electron transport ladders, thus help to broaden the recombination zone and improve the balance of the carriers. Finally, high performance blue device with the maximum brightness (B_max), external quantum efficiency (η_{ext, max}) and Commission Internationale de l'Eclairage coordinates (CIE_{x, y}) of 7531 cd/m², 4.3% and (0.146, 0.148), respectively, was obtained. Furthermore, the optimized white EL device with B_max, η_{ext, max} and CIE_{x, y} up to 11,315 cd/m², 5.7% and (0.241, 0.327), respectively, was acquired by adjusting the doping concentrations of fluorescent emitters and the thicknesses of light-emitting layers.

在这项研究中，报告了一种可行的器件设计策略，通过利用常规的电子传输材料作为蓝色发射器来实现高效的蓝色和白色荧光有机发光二极管。通过选择紧密匹配的主体材料，制造并研究了一系列器件。空穴占主导地位的发光层中的掺杂的蓝色发射体分子既充当发射中心又充当电子传输阶梯，从而有助于加宽复合区并改善载流子的平衡。最后，具有最大亮度（B高性能蓝色器件_最大值），外部量子效率（η _{EXT，最大值}）和委员会国际照明坐标（CIE _X，Y）7531烛光/米的²分别获得4.3％和（0.146，0.148）。此外，B中的优化的白色EL器件_最大值，η _{EXT，最大值}和CIE _X，Y高达11315烛光/米²，5.7％和（0.241，0.327），分别通过调节荧光发射体的掺杂浓度获得并发光层的厚度。