Effects of hole carrier injection and transport in organic light-emitting diodes

被引：53

作者：

Antoniadis, H ^{[1
]}

Miller, JN ^{[1
]}

Roitman, DB ^{[1
]}

Cambell, IH ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 1997年 / 44卷 / 08期

关键词：

D O I：

10.1109/16.605470

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we examine the effects of hole carrier injection and mobility on both the electroluminescence (EL) quantum efficiency and the operating voltage of bilayer organic light-emitting diodes (OLED's). We find that hole-injection is limited by the nature of the hole injecting interface and significantly affects the operating voltage, but not the quantum efficiency of the OLED. Hole mobility is found not to affect the device quantum efficiency. We demonstrate the characteristics of an ideal ohmic contact by measuring space-charge-limited currents in a trap-free hole transporting polymer layer.

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页码：1289 / 1294

页数：6

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