Role of diffusion in two-dimensional bimolecular recombination

被引：16

作者：

Nenashev, A. V. ^{[1
,2
]}

Jansson, F. ^{[3
,4
,5
]}

Baranovskii, S. D.

Osterbacka, R. ^{[4
,5
]}

Dvurechenskii, A. V. ^{[1
,2
]}

Gebhard, F. ^{[6
,7
]}

机构：

[1] Russian Acad Sci, Inst Semicond Phys, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, Novosibirsk 630090, Russia

[3] Abo Akad Univ, Grad Sch Mat Res, SF-20500 Turku, Finland

[4] Abo Akad Univ, Dept Phys, SF-20500 Turku, Finland

[5] Abo Akad Univ, Ctr Funct Mat, SF-20500 Turku, Finland

[6] Univ Marburg, Dept Phys, D-35032 Marburg, Germany

[7] Univ Marburg, Ctr Mat Sci, D-35032 Marburg, Germany

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 21期

基金：

芬兰科学院;

关键词：

We are indebted to Professor Gytis Juška for stimulating discussions and to Dr. A. Zinovieva for reading the manuscript and giving valuable comments. Financial support from the Academy of Finland under Project No. 116995; from the Deutsche Forschungsgemeinschaft (GRK 790); and from the Fonds der Chemischen Industrie is gratefully acknowledged;

D O I：

10.1063/1.3435469

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Experiments on carrier recombination in two-dimensional organic structures are often interpreted in the frame of the Langevin model with taking into account only the drift of the charge carriers in their mutual electric field. While this approach is well justified for three-dimensional systems, it is in general not valid for two-dimensional structures where the contribution of diffusion can play a dominant role. We study the two-dimensional Langevin recombination theoretically and find the critical concentration below which diffusion cannot be neglected. For typical experimental conditions, neglecting the diffusion leads to an underestimation of the recombination rate by several times. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3435469]

引用

页数：3

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