| 利用NPB/MoO3/NpB作为空穴传输层的低驱动电压的有机发光器件 |
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| 作者姓名： | Liu GQ Ji WY Xie WF Zhang HZ |
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| 作者单位： | 1. 吉林大学物理学院,长春,吉林,130023
2. 吉林大学电子科学与工程学院光电子重点联合实验室,长春,吉林,130021 |
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| 摘 要： | 通过引入(NPB/MoO3)x/NPB作为空穴传输层,获得了低驱动电压的有机电致发光器件(OLEDs),(NPB/MoO3)x为多层结构(x为0,1和2).通过对比发现,在相同亮度下,x=1对应的器件具有最低的工作电压.这是由于在NPB和MoO3之间产生了电荷转移复合物(charge transfer,CT),这将会降低器件的空穴注入势垒,从而降低其工作电压,文中所研究器件为基于8-羟基喹啉铝(tris(8-hydroxyquino-line)aluminum,Alq3)的绿光器件.与x=0时的普通器件相比,在亮度为1 000 cd·m-2时,x=1时的工作电压降低了 0.8 V.
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| 关 键 词： | 有机发光器件 P型 掺杂 空穴传输层 |
Low driving voltage in organic light-emitting diodes with NPB/MoO3/NPB as a hole transport layer |
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| Liu GQ,Ji WY,Xie WF,Zhang HZ.Low driving voltage in organic light-emitting diodes with NPB/MoO3/NPB as a hole transport layer[J].Spectroscopy and Spectral Analysis,2011,31(4):882-885. |
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| Authors: | Liu Guo-Qiang Ji Wen-Yu Xie Wen-Fa Zhang Han-Zhuang |
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| Institution: | Department of Physics, Jilin University, Changchun 130023, China. guoqiang@jlu.edu.cn |
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| Abstract: | Driving voltage of organic light-emitting diodes (OLEDs) was lowered by applying (NPB/MoO3)(x)/NPB as a hole transport layer (HTL). (NPB/MoO3)(x) was multi-layer periodic (MLP) structure with x changed from 0 to 3. Compared with the conventional device with 0-periodic structure, the driving voltage of the device with 1-periodic structure was the lowest. This was due to charge transfer (CT) complex formation between NPB and MoO3. The driving voltage of tris (8-hydroxyquinoline) aluminum (Alq3)-based organic light-emitting devices (OLEDs) could be lowered by 0. 8 V at 1 000 cd x m(-2) by using multiple structure of NPB/MoO3/NPB. |
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