Highly efficient single-emitting-layer white organic light-emitting diodes with reduced efficiency roll-off
Highly efficient single-emitting-layer white organic light-emitting diodes with reduced efficiency roll-off
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DOI：
10.1063/1.3097028
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发表时间：
2009-03-09
影响因子：
4
通讯作者：
Wang, Lixiang
中科院分区：
文献类型：
--
作者：
Wang, Qi;Ding, Junqiao;Wang, Lixiang
通过将蓝色和橙子磷光染料共掺杂到单一基质材料中，获得了12 V时坐标为（0.38，0.43）的高效白色有机发光二极管（WOLED）。值得注意的是，该WOLED实现了降低的电流效率滚降，其在1000 cd/m2下从其最大值37.3-31.0 cd/A略微降低。随后研究了器件的工作机理，以揭示高性能的起源。
By codoping blue and orange phosphorescent dyes into a single host material, a highly efficient white organic light-emitting diode (WOLED) with Commission Internationale de L'Eclairage coordinates of (0.38, 0.43) at 12 V is demonstrated. Remarkably, this WOLED achieves reduced current efficiency roll-off, which slightly decreases from its maximum value of 37.3-31.0 cd/A at 1000 cd/m(2). The device operational mechanism is subsequently investigated in order to unveil the origin of the high performance.