Electron-hole pair mechanism for the magnetic field effect in organic light emitting diodes based on poly(paraphenylene vinylene)

被引：50

作者：

Bagnich, S. A. ^{[1
]}

Niedermeier, U. ^{[1
,2
]}

Melzer, C. ^{[1
]}

Sarfert, W. ^{[2
]}

von Seggern, H. ^{[1
]}

机构：

[1] Tech Univ Darmstadt, Dept Mat Sci, D-64287 Darmstadt, Germany

[2] Siemens AG, D-91058 Erlangen, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 106卷 / 11期

关键词：

electroluminescence; magnetic field effects; organic light emitting diodes; polymers; SANDWICH DEVICES; ROOM-TEMPERATURE; LARGE MAGNETORESISTANCE; SEMICONDUCTORS; HYPERFINE; EMISSION;

D O I：

10.1063/1.3260249

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated the magnetic field effect (MFE) on current and electroluminescence in organic light emitting diodes based on poly(paraphenylene vinylene). The MFE was strictly positive in the full range of device operation and showed nonmonotonic dependencies on applied voltage and temperature. Furthermore, the MFE on current obtained in bipolar devices was significantly larger than in hole-dominated devices. We discuss our results in the framework of an electron-hole pair model and show that the model can explain all functional dependencies observed in our devices.

引用

页数：7

共 27 条

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