Hybrid organic-inorganic light emitting diodes: effect of the metal oxide

被引：64

作者：

Bolink, H. J. ^{[1
,2
]}

Brine, H. ^{[1
]}

Coronado, E. ^{[1
]}

Sessolo, M. ^{[1
]}

机构：

[1] Univ Valencia, Inst Ciencia Mol, ES-46071 Valencia, Spain

[2] FGUV, ES-46071 Valencia, Spain

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 20期

关键词：

HIGH-EFFICIENCY; DIELECTRICS; TRANSISTORS;

D O I：

10.1039/b927408a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Hybrid organic-inorganic light emitting diodes (HyLEDs), employing metal oxides as the electron injecting contacts, are interesting as an alternative to OLEDs. Until recently, the metal oxide of choice was either titanium dioxide or zinc oxide. In this work two wide bandgap metal oxides, HfO(2) and MgO, are employed as electron injecting layer in HyLEDs. It is demonstrated that both the current density and the luminance values obtained are directly related to the barriers for electron injection (from the ITO to the metal oxide) and for hole transfer to the same metal oxide, outlining a new design rule for the optimization of HyLEDs. Record device efficacies (3.3 cd/A, >10000 cd/m(2)) using the commonly used emitting polymer (F8BT) are obtained.

引用

页码：4047 / 4049

页数：3

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