An iodine-doped polymer light-emitting diode

被引：90

作者：

Huang, F ^{[1
]}

MacDiarmid, AG ^{[1
]}

Hsieh, BR ^{[1
]}

机构：

[1] XEROX CORP, WEBSTER, NY 14580 USA

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 17期

关键词：

D O I：

10.1063/1.120078

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The performance of polymer light-emitting diodes (LEDs) having the configuration Al/MEH-PPV/ITO, where MEH-PPV=poly(2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene-vinylene) has been improved by light iodine doping of the emissive MEH-PPV polymer layer whereby the turn-on voltage is reduced and the external quantum efficiency is increased by an order of magnitude. It differs from nondoped MEH-PPV LEDs in that light emission is observed in both forward and reverse bias modes. It is believed that the mobility of the I-3(-) anions in the (MEH-PPV)(x)(+y)(I-3)(xy)(-) species formed on doping the MEH-PPV compensate for injected charges at the electrodes, thus reducing the electron and hole injection barriers. (C) 1997 American Institute of Physics. (C) [S0003-6951(97)00943-1].

引用

页码：2415 / 2417

页数：3

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