| 方波驱动法测定Alq3的电子迁移率 |
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| 引用本文： | 陈磊,李贵芳,陈玉焕,王明霞,闫东航,张吉东,秦大山.方波驱动法测定Alq3的电子迁移率[J].发光学报,2012,33(9):954-959. |
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| 作者姓名： | 陈磊 李贵芳 陈玉焕 王明霞 闫东航 张吉东 秦大山 |
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| 作者单位： | 1. 河北工业大学 化工学院, 天津 300130;2. 中国科学院长春应用化学研究所 高分子物理与化学国家重点实验室, 吉林 长春 130021 |
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| 基金项目： | 国家自然科学基金(50803014);中国科学院长春应用化学研究所高分子物理与化学国家重点实验室开放基金资助项目 |
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| 摘 要： | 在非正弦波(方波)的驱动下,观察到了OLED中Alq3的电致发光现象。在高段方波驱动下,Alq3中的电子向阳极移动;在低段方波驱动下,Alq3中的电子向阴极移动。当方波的周期是电子穿过Alq3中所用时间的2倍时,Alq3中的电致发光现象完全消失。由此,可以计算出Alq3中的电子迁移率,得到的结果和文献的报道值相吻合。对Alq3中电子迁移率和厚度的关系进行了研究,从而提出了一种简单易行的计算有机材料的电子迁移率的方法。
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| 关 键 词： | 方波驱动 迁移率 Alq3 p型掺杂 |
| 收稿时间： | 2012/6/12 |
Measurement of The Electron Mobility of Tris(8-quinolinolato) Aluminum Driven by Square Waves |
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| CHEN Lei,LI Gui-fang,CHEN Yu-huan,WANG Ming-xia,YAN Dong-hang,ZHANG Ji-dong,QIN Da-shan.Measurement of The Electron Mobility of Tris(8-quinolinolato) Aluminum Driven by Square Waves[J].Chinese Journal of Luminescence,2012,33(9):954-959. |
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| Authors: | CHEN Lei LI Gui-fang CHEN Yu-huan WANG Ming-xia YAN Dong-hang ZHANG Ji-dong QIN Da-shan |
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| Institution: | 1. School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China;2. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130023, China |
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| Abstract: | The electroluminescence of tris(8-quinolinolato) aluminum(Alq3) has been observed in organic light emitting diodes under a kind of non-sinusoidal waveform(a square wave).During the high period of square wave,the electrons in Alq3 are driven towards the anode,while moved towards the cathode during the following low period of square wave.The electroluminescence of Alq3 vanishes completely from the point where the period of square wave equals twice the transit time of electrons across the Alq3 layer.Thus,the electron mobility of Alq3 can be evaluated,and the obtained results are in good accordance with the reported values.The thickness dependence of the electron mobility for Alq3 is also investigated.We provide a simple,easily accessible method to determine the charge-carrier mobility for organic materials. |
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| Keywords: | square wave driving mobility tris(8-quinolinolato) aluminum p-type doping |
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