Highly efficient red phosphorescent light-emitting diodes based on ruthenium(II)-complex-doped semiconductive polymers
Highly efficient red phosphorescent light-emitting diodes based on ruthenium(II)-complex-doped semiconductive polymers
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DOI：
10.1063/1.1637456
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发表时间：
2004-01
影响因子：
4
通讯作者：
Hong Xia;Chengbo Zhang;Song Qiu;P. Lu;Jingying Zhang;Yuguang Ma
中科院分区：
文献类型：
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作者：
Hong Xia;Chengbo Zhang;Song Qiu;P. Lu;Jingying Zhang;Yuguang Ma
报道了钌（II）配合物[Ru(4,7- ph2 -phen)3]2+掺杂的宽带隙半导体聚合物，即聚乙烯基咔唑（PVK）、聚二己基芴（PDHF）和阶梯状聚苯乙烯（LPPP）作为发光层的发光器件发出的红色电磷光。然而，在PVK体系中只研究了高效的能量传递，这不仅是因为与PDHF和LPPP相比，它的激发态寿命相对较长，而且还因为[Ru(4,7- ph2 -phen)3]2+与PVK具有良好的化学相容性。电致发光光谱显示[Ru(4,7- ph2 -phen)3]2+的特征光谱，峰值为612 nm，国际委员会eclairage值为（0.62,0.37）。优化后的器件氧化铟锡/PVK: 5 wt % [Ru(4,7- ph2 -phen)3]2+/PBD/Alq3/LiF/Al的最大发光效率和功率效率分别为8.6 cd/A和2.1 lm/W。报道了钌（II）配合物[Ru(4,7- ph2 -phen)3]2+掺杂的宽带隙半导体聚合物，即聚乙烯基咔唑（PVK）、聚二己基芴（PDHF）和阶梯状聚苯乙烯（LPPP）作为发光层的发光器件发出的红色电磷光。然而，在PVK体系中只研究了高效的能量传递，这不仅是因为与PDHF和LPPP相比，它的激发态寿命相对较长，而且还因为[Ru(4,7- ph2 -phen)3]2+与PVK具有良好的化学相容性。电致发光光谱显示[Ru(4,7- ph2 -phen)3]2+的特征光谱，峰值为612 nm，国际委员会eclairage值为（0.62,0.37）。优化后的器件氧化铟锡/PVK: 5 wt % [Ru(4,7- ph2 -phen)3]2+/PBD/Alq3/LiF/Al的最大发光效率和功率效率分别为8.6 cd/A和2.1 lm/W。
Red electrophosphorescence from light-emitting devices based on ruthenium(II)-complex [Ru(4,7-Ph2-phen)3]2+-doped wide-band-gap semiconductive polymers, i.e., poly(vinylcarbazole) (PVK), polydihexylfluorene (PDHF), and ladderlike polyphenylene (LPPP), as the emitting layers are reported. However, only highly efficient energy transfer was investigated in a PVK system, not only because of the relatively longer lifetime of its excited state compared with PDHF and LPPP, but also because of the good chemical compatibility of [Ru(4,7-Ph2-phen)3]2+ with PVK. The EL spectra show the characteristic spectrum of [Ru(4,7-Ph2-phen)3]2+, at a peak of 612 nm and Commission Internationale del’Eclairage of (0.62, 0.37). The optimized device indium tin oxide/PVK: 5 wt % [Ru(4,7-Ph2-phen)3]2+/PBD/Alq3/LiF/Al shows the maximum luminance efficiency and power efficiency as 8.6 cd/A and 2.1 lm/W, respectively.Red electrophosphorescence from light-emitting devices based on ruthenium(II)-complex [Ru(4,7-Ph2-phen)3]2+-doped wide-band-gap semiconductive polymers, i.e., poly(vinylcarbazole) (PVK), polydihexylfluorene (PDHF), and ladderlike polyphenylene (LPPP), as the emitting layers are reported. However, only highly efficient energy transfer was investigated in a PVK system, not only because of the relatively longer lifetime of its excited state compared with PDHF and LPPP, but also because of the good chemical compatibility of [Ru(4,7-Ph2-phen)3]2+ with PVK. The EL spectra show the characteristic spectrum of [Ru(4,7-Ph2-phen)3]2+, at a peak of 612 nm and Commission Internationale del’Eclairage of (0.62, 0.37). The optimized device indium tin oxide/PVK: 5 wt % [Ru(4,7-Ph2-phen)3]2+/PBD/Alq3/LiF/Al shows the maximum luminance efficiency and power efficiency as 8.6 cd/A and 2.1 lm/W, respectively.