| 磷光铱配合物的纯度对其电致发光性能的影响 |
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| 引用本文： | 常桥稳,刘志伟,王登科,姜婧,晏彩先,李杰,陈家林,刘伟平.磷光铱配合物的纯度对其电致发光性能的影响[J].发光学报,2015,36(12):1396-1401. |
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| 作者姓名： | 常桥稳 刘志伟 王登科 姜婧 晏彩先 李杰 陈家林 刘伟平 |
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| 作者单位： | 1. 昆明理工大学 材料科学与工程学院, 云南 昆明 650093;
2. 昆明贵金属研究所 稀贵金属综合利用新技术国家重点实验室, 云南 昆明 650106;
3. 北京大学 化学与分子工程学院, 北京 100871;
4. 云南大学 物理科学技术学院, 云南 昆明 650091 |
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| 基金项目： | 国家科研院所技术开发专项(2013EG115008);云南省科研院所技术开发专项(2012CF003)资助项目 |
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| 摘 要： | 采用不同的真空热梯度升华条件,获得了不同纯度的乙酰丙酮酸二(2-苯基吡啶)铱Ir(ppy)2(acac)。以不同纯度Ir(ppy)2(acac)为客体材料,制备了结构为ITO:MoO3/CBP/CBP:Ir(ppy)2(acac)/TPBi/LiF:Al的有机发光二极管(OLEDs),其中CBP和TPBi分别是4,4'-二(9-咔唑)联苯和1,3,5-三(1-苯基-1H-苯并咪唑-2-基)苯。评价了不同纯度磷光铱配合物制备的器件的电致发光性能,探索了磷光铱配合物纯度对器件性能的影响。结果表明:Ir(ppy)2(acac)升华后可以提高器件的稳定性,纯度高的材料可以在较低的掺杂浓度下获得较高的发光效率。
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| 关 键 词： | 磷光铱配合物 纯度 电致发光性能 OLED 影响 |
| 收稿时间： | 2015-08-13 |
Effect of Purity on Electroluminescent Performance of Phosphorescent Iridium Complexes |
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| CHANG Qiao-wen,LIU Zhi-wei,WANG Deng-ke,JIANG Jing,YAN Cai-xian,LI Jie,Chen Jia-lin,LIU Wei-ping.Effect of Purity on Electroluminescent Performance of Phosphorescent Iridium Complexes[J].Chinese Journal of Luminescence,2015,36(12):1396-1401. |
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| Authors: | CHANG Qiao-wen LIU Zhi-wei WANG Deng-ke JIANG Jing YAN Cai-xian LI Jie Chen Jia-lin LIU Wei-ping |
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| Affiliation: | 1. Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2. State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China;
3. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;
4. School of Physical Science and Technology, Yunnan University, Kunming 650091, China |
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| Abstract: | Ir(ppy)2(acac) with different purity levels were obtained by adopting various thermal gradient vacuum sublimation conditions, and were used as phosphorescence dopants in OLEDs with a structure of ITO:MoO3/CBP/CBP:Ir(ppy)2(acac)/TPBi/LiF/Al, where CBP and TPBi were the abbreviations of 4,4'-N,N'-dicarbazole-biphenyl and 1,3,5-tris(N-phenylbenzimidazole-2-yl) benzene, respectively. The electroluminescent performances of Ir(ppy)2(acac) were evaluated and the effect of purity levels was explored. The results indicate that sublimation improves electroluminescent stability of the device, and a higher purity level endows the device with greater electroluminescent efficiency even at a low doping concentration. |
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| Keywords: | phosphorescent iridium complex purity electroluminescent performance OLED effect |
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