| 钙铝镁合金阴极对WOLED器件性能的影响 |
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| 引用本文： | 王璐薇,张方辉.钙铝镁合金阴极对WOLED器件性能的影响[J].发光学报,2015,36(12):1422-1426. |
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| 作者姓名： | 王璐薇 张方辉 |
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| 作者单位： | 陕西科技大学 电气与信息工程学院, 陕西 西安 710021 |
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| 基金项目： | 国家自然科学基金(61076066);陕西省科技发展计划(2011KTCQ01-09)资助项目 |
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| 摘 要： | 采用Ca/Al/Mg合金作为器件的阴极,基于红绿/蓝双发光层制作了6种白色磷光OLED器件,器件结构为ITO/MoO3 (30 nm)/NPB (40 nm)/mCP:Firpic (8%,40 nm)/CBP:R-4B (2%):Ir(ppy)3 (14%,5 nm)/TPBi (10 nm)/Alq3(40 nm)/Ca:Al:Mg (x%,100 nm) (x=0,5,10,15,20,25)。通过改变Mg的掺杂比例,研究了不同比例的Ca/Al/Mg合金阴极对器件性能的影响。结果表明:Mg质量分数为15%的Ca/Al/Mg阴极具有良好的电子注入特性,有效改善了器件的发光特性,最大发光亮度可达1 504 cd/m2,效率达到最大值14.3 cd/A,色坐标接近(0.46, 0.42)。
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| 关 键 词： | 钙铝镁合金 阴极 电子注入 |
| 收稿时间： | 2015-08-21 |
Effects of Ca/Al/Mg Alloy as Cathode on The Performance of White Organic Light-emitting Devices |
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| WANG Lu-wei,ZHANG Fang-hui.Effects of Ca/Al/Mg Alloy as Cathode on The Performance of White Organic Light-emitting Devices[J].Chinese Journal of Luminescence,2015,36(12):1422-1426. |
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| Authors: | WANG Lu-wei ZHANG Fang-hui |
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| Institution: | College of Electrical and Information Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China |
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| Abstract: | Based on the red and green/blue light emitting layer, six white phosphorescent OLEDs are fabricated by using Ca/Al/Mg alloy as cathode, and the effects of different proportion of Ca/Al/Mg alloy on OLEDs are researched by changing the doping ratio of Mg. The device structures are as follows: ITO/MoO3(30 nm)/NPB(40 nm)/mCP:Firpic(8%)(40 nm)/CBP:R-4B(2%):Ir(ppy)3(14%)(5 nm)/TPBi(10 nm)/Alq3(40 nm)/Ca:Al:Mg(x%)(100 nm)(x=0, 5, 10, 15, 20, 25). The experiment results show that the cathode with Mg mass fraction of 15% has good electron injection characteristics which can effectively improve the light-emitting characteristics of the device. The maximum brightness is 1 504 cd/m2, the maximum current efficiency is 14.3 cd/A, and the color coordinates is close to (0.46, 0.42). |
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| Keywords: | Ca:Al:Mg alloy cathode electron injection |
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