Fabrication process and device characteristics of multi-layered polymer light-emitting diodes

被引：6

作者：

Hirayama, Y ^{[1
]}

Sano, T ^{[1
]}

Sakakibara, T ^{[1
]}

Takahashi, H ^{[1
]}

Takahashi, S ^{[1
]}

Shibata, K ^{[1
]}

机构：

[1] Sanyo Elect Co Ltd, Mat & Devices Dev Ctr BU, Hirakata, Osaka 5738534, Japan

来源：

JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY | 2004年 / 17卷 / 02期

关键词：

organic electroluminescence; polymer light-emitting diode (PLED);

D O I：

10.2494/photopolymer.17.319

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Multi-layered polymer light-emitting diodes (ML-PLEDs) with the structure of [transparent anode / buffer-layer / emitting-layer / hole-blocking layer / cathode] have been fabricated by organic-all-wet coating process, and the device characteristics have been studied. The multi-layered device, [ITO / PEDOT:PSS / poly[2-methoxy-5-(2-ethyl hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) / poly[(9,9-dioctylfluorene)-alt-{ 1,4-distyryl-2-methoxy-5-(2-ethylhexyloxy)benzene}] (PF8-DSB) / Ca / At], has shown enhanced electroluminescent (EL) efficiency of 3.6 cd/A while the conventional device [ITO / PEDOT:PSS / MEH-PPV / Ca / Al] has shown only 1.0 cd/A in the EL efficiency. It is considered that this improvement is achieved by the adequate confinement of the recombination site of holes and electrons in the emitting layer and also by the effects of the interlayer between two polymers.

引用

页码：319 / 322

页数：4

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