Highly efficient single-layer phosphorescent white organic light-emitting diodes using a spirofluorene-based host material.
Highly efficient single-layer phosphorescent white organic light-emitting diodes using a spirofluorene-based host material.
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DOI：
10.1364/ol.34.000407
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发表时间：
2009-02
期刊：
影响因子：
3.6
通讯作者：
S. Jeon;K. Yook;C. Joo;Jun Yeob Lee
中科院分区：
文献类型：
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作者：
S. Jeon;K. Yook;C. Joo;Jun Yeob Lee
通过在基于螺芴的氧化膦基质材料中掺杂蓝色和红色磷光掺杂剂，开发了高效磷光白色有机发光二极管（PHWOLED）。使用基于螺芴的氧化膦主体材料的PHWOLED在100 cd/m（2）下获得了18.3%的高量子效率和34.2 cd/A的电流效率。此外，在PHWOLED中实现了28.3lm/W的高功率效率。主体材料的宽三重态带隙和发光层的电荷平衡是其高效率的主要原因。
Highly efficient phosphorescent white organic light-emitting diodes (PHWOLEDs) were developed by the doping of phosphorescent blue and red dopants in a spirofluorene-based phosphine oxide host material. A high quantum efficiency of 18.3% and a current efficiency of 34.2 cd/A at 100 cd/m(2) were obtained from the PHWOLED with the spirofluorene-based phosphine oxide host material. In addition, a high power efficiency of 28.3 lm/W was achieved in the PHWOLED. The wide triplet bandgap of host and charge balance in the light-emititng layer were responsible for the high efficiency.