| LiF用作阴极注入层的有机发光二极管制备 |
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| 引用本文： | 张靖磊,吴敬,刘彭义.LiF用作阴极注入层的有机发光二极管制备[J].暨南大学学报,2007,28(3):272-275. |
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| 作者姓名： | 张靖磊 吴敬 刘彭义 |
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| 作者单位： | 暨南大学理工学院物理系,广东,广州,510632 |
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| 摘 要： | 使用真空热蒸发方法,制备了结构为ITO/TPD/Alq3/LiF/Al的有机发光二极管,其中LiF用作阴极注入层,LiF超薄层的加入,增强了电子注入,降低了启亮电压,提高了器件的发光效率和亮度. 实验结果表明:当加入LiF层的厚度为0.5 nm时,器件性能的改善最好,和不含LiF的器件相比,启亮电压由原来的9 V降低到5 V,效率由1.5 cd/A增加到3.3 cd/A,提高了近1倍,然而随着加入LiF层厚度的增加,器件性能的改善效果降低.
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| 关 键 词： | 有机发光二极管 LiF 电子注入 界面形貌 阴极 注入层 有机发光二极管 管制 layer injection cathode organic 改善效果 层厚度 发光效率 器件性能 结果 实验 亮度 电子注入 增强 超薄层 结构 热蒸发方法 |
| 文章编号： | 1000-9965（2007）03-0272-04 |
| 修稿时间： | 2007-01-08 |
Fabrication of organic light-emitting diodes using LiF as a cathode injection layer |
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| ZHANG Jing-lei,WU Jing,LIU Peng-yi.Fabrication of organic light-emitting diodes using LiF as a cathode injection layer[J].Journal of Jinan University(Natural Science & Medicine Edition),2007,28(3):272-275. |
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| Authors: | ZHANG Jing-lei WU Jing LIU Peng-yi |
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| Institution: | Department of Physics, Jinan University, Guangzhou 510632, China |
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| Abstract: | Organic light-emitting diodes using LiF as a cathode injection layer are fabricated by vapor thermal deposition.The diode with structure of ITO/TPD/Alq3/LiF/Al(TPD:N,N'-diphenyl-N,N'-bis(3-methylphenyl)-1,1'-biphenyl-4,4'diamine,Alq3: tris(8-quinolinolato)-aluminum) performed better electroluminescent properties compared with the diodes without LiF layer.Experimental results showed that the insertion of ultra-thin LiF layer enhances the electron injection,reduces the turn-on voltage and improves the luminance and efficiency of diodes.The diode with a 0.5 nm LiF layer demonstrated the best performance,the turn-on voltage lowers to 5 V and efficiency increases to 3.3 cd/A in comparison with 9 V and 1.5 cd/A of the diode without LiF layer.However,the performances of diodes become worse with increasing thickness of LiF layer. |
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| Keywords: | Organic light-emitting diodes LiF Electron injection Interfacial shape |
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