| 氟化钇电子注入层对OLED器件性能的影响 |
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| 引用本文： | 张镭,郑宣明,林杰,刘星元.氟化钇电子注入层对OLED器件性能的影响[J].发光学报,2015,36(8):912-916. |
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| 作者姓名： | 张镭 郑宣明 林杰 刘星元 |
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| 作者单位： | 1. 发光学及应用国家重点实验室 中国科学院长春光学精密机械与物理研究所, 吉林 长春 130033;
2. 中国科学院大学, 北京 100049 |
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| 摘 要： | 利用氟化钇(YF3)代替Li F作为电子注入层材料,以金属铝作为阴极,制备了有机电致发光器件(OLED)。实验结果表明:适当厚度的YF3电子注入缓冲层可以增强阴极的电子注入能力,使得电子和空穴的浓度更加平衡,有效地提高器件的电致发光性能。其中,1.2 nm厚YF3的器件具有最小的起亮电压2.6 V,最高的电流效率8.52 cd·A-1,最大的亮度36 530 cd·m-2。最大亮度和电流效率与Li F参考样品相比,分别提高了39%和53%。
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| 关 键 词： | 有机电致发光器件 氟化钇 电子注入层 |
| 收稿时间： | 2015-03-12 |
Effect of YF3 Electron Injection Layer on The Performance of Organic Light-emitting Devices |
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| ZHANG Lei,ZHENG Xuan-ming,LIN Jie,LIU Xing-yuan.Effect of YF3 Electron Injection Layer on The Performance of Organic Light-emitting Devices[J].Chinese Journal of Luminescence,2015,36(8):912-916. |
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| Authors: | ZHANG Lei ZHENG Xuan-ming LIN Jie LIU Xing-yuan |
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| Institution: | 1. State Key Laboratory of Luminescence and Applications, Changchun Insitute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Organic light emitting devices (OLEDs) were fabricated with yttrium fluoride (YF3) as the electron injection layer instead of lithium fluoride (LiF) and aluminum as the cathode. The experiment results show that YF3 injection buffer layer with appropriate thickness can effectively enhance the electron injection ability of the cathode, leading to more balanced concentration of electrons and holes, and optimized electroluminescent properties of OLEDs. The device with 1.2 nm-thick YF3 layer has the minimum turn-on voltage of 2.6 V, the maximum current efficiency of 8.52 cd·A-1, and the maximum luminance of 36 530 cd·m-2. Compared with LiF reference sample, the maximum brightness and current efficiency are increased by 39% and 53%, respectively. |
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| Keywords: | organic light-emitting devices yttrium fluoride electron injection layer |
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