Influence of exciton distribution on external quantum efficiency in bilayer organic solar cells

被引：8

作者：

Breyer, Ch. ^{[1
]}

Vogel, M. ^{[1
]}

Mohr, M. ^{[1
]}

Johnev, B. ^{[1
]}

Fostiropoulos, K. ^{[1
]}

机构：

[1] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2006年 / 243卷 / 13期

关键词：

D O I：

10.1002/pssb.200669172

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The spatially resolved photogeneration of excitons in bilayer organic solar cells (OSC) was simulated by a detailed optical model. A layering scheme involving up to six different ultrathin films on the substrate was taken into account, including the optical constants, interference effects and resulting standing waves. Thus a strong dependency of local exciton generation on the specific geometry and the wavelength was shown. To determine the distribution of the generated excitons the continuity equation was solved. By defining the quenching properties of cell interfaces the influence of interface exciton dissociation was demonstrated. With given exciton diffusion lengths the generation of charge carriers and the quantum efficiency of phthalocyanine-C-60 OSCs was calculated. The applicability of the model is discussed by comparison with experimental data. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：3176 / 3180

页数：5

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