| Highly Efficient Polymer Light—Emitting Devices Using a New Phosphorescent Material |
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| 引用本文： | 王建华,段炼,王立铎,邱勇.Highly Efficient Polymer Light—Emitting Devices Using a New Phosphorescent Material[J].中国物理快报,2003,20(7):1141-1143. |
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| 作者姓名： | 王建华 段炼 王立铎 邱勇 |
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| 作者单位： | OrganicOptoelectronicsLaboratory,DepartmentofChemistry,Tsinghuauniversity,Beijing100084 |
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| 摘 要： | A new phosphorescent material bis(2-phenyl-benzoimiazole) acetylacetonato iridium(PBI)2 IrAcac)is designed and synthesized.The absorption,photoluminescence and electroluminescence are measured.The pllymer-based light-emitting devices which use polyvinylcarbazole(PVK) as host and (PBI)2 IrAcac as emitter were fabricated.These light-emitting devices show a bright green emission at 548nm,The device ITO/(PBI)2IrAcac:PVK/BCP/Alq3/Mg:Ag shows a very high efficiency.A Peak external quantum efficiency of 21.5cd/A(5.8%) was obtained at 0.1mA/cm^2.The maximum brightness is 3840cd/m^2.
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| 关 键 词： | 高效聚合物发光装置 发光材料 磷光体 量子效应 聚乙烯咔唑 PVK OLED 有机电致发光器件 |
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