High-efficiency and heavily doped organic light-emitting devices based on quench-resistant red iridium complex

High-efficiency and heavily doped organic light-emitting devices based on quench-resistant red iridium complex
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基于耐淬灭红色铱配合物的高效重掺杂有机发光器件

DOI:
10.1016/j.jlumin.2012.06.034
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发表时间:
2013-02
影响因子:
3.6
通讯作者:
Lu, Zhiyun
Lu, Zhiyun
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Wang, Qi;Yu, Junsheng;Zhao, Juan;Wang, Jun;Li, Ming;Lu, Zhiyun

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以新型铱配合物双[2-(9,9-二甲基-9H-芴-2-基)苯并噻唑-N,C2 ']乙酰丙酮合铱(III)[(fbt)2 Ir(acac)]为荧光粉,制备了高效的红色磷光有机电致发光器件。当掺杂浓度为15wt%时,器件的最大发光效率、功率效率和外量子效率分别为35.2cd/A、21.3lm/W和18.2%,表明(fbt)2 Ir(acac)具有良好的抗猝灭性能。这些结果对“易于制造”的OLED的开发很有吸引力。已经证明,高效率来自于发射层中更平衡的电荷载流子。
Highly efficient red phosphorescent organic light-emitting devices had been fabricated using a new iridium complex, bis[2-(9,9-dimethyl-9H-fluoren-2-yl) benzothiazolato-N,C2']iridium(III) (acetylacetonate) [(fbt)2Ir(acac)] as phosphor. With a high doping concentration of 15 wt%, the device exhibited a maximum luminance efficiency, power efficiency and external quantum efficiency (EQE) of 35.2 cd/A, 21.3 lm/W, 18.2%, respectively, indicating an excellent quench-resistant property of (fbt)2Ir(acac). The results are appealing towards the development of “easy-to-make” OLEDs. It has been demonstrated that the high efficiency arises from more balanced charge carriers in the emissive layer.
基于脒基配体磷光铱配合物的非常高效的红色电致发光器件
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