Sensing electron transport in a blue-emitting copolymer by transient electroluminescence

被引：10

作者：

Bange, Sebastian ^{[1
]}

Kuksov, Andriy ^{[1
]}

Neher, Dieter ^{[1
]}

机构：

[1] Univ Potsdam, Phys Weicher Mat, D-14469 Potsdam, Germany

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 14期

关键词：

D O I：

10.1063/1.2797991

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A variation of the transient electroluminescence technique is introduced which allows us to selectively study the electron transport in a thin polymer layer. It relies on the formation of an insoluble interlayer from a formerly solvable polymer and enables probing of unipolar electron transport despite of injection barriers. It opens up possibilities to gain insight into the operation of light-emitting diodes. Applicability to a blue-emitting spirobifluorene-based copolymer is shown by comparison to time-of-flight results for electron and hole transport and evidence supplied for an intermixing of electron and hole dynamics through blocking of electrons at the polymer/anode interface. (C) 2007 American Institute of Physics.

引用

页数：3

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