Organic solar cells characterized by dark lock-in thermography

被引：37

作者：

Bachmann, Jonas ^{[1
]}

Buerhop-Lutz, Claudia ^{[1
]}

Deibel, Carsten ^{[2
]}

Riedel, Ingo ^{[3
]}

Hoppe, Harald ^{[4
]}

Brabec, Christoph J. ^{[1
]}

Dyakonov, Vladimir ^{[2
]}

机构：

[1] ZAE Bayern, Bavarian Ctr Appl Energy Res, D-91058 Erlangen, Germany

[2] Univ Wurzburg, D-97074 Wurzburg, Germany

[3] Carl von Ossietzky Univ Oldenburg, Inst Phys, D-26129 Oldenburg, Germany

[4] Tech Univ Ilmenau, Inst Phys, D-98693 Ilmenau, Germany

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2010年 / 94卷 / 04期

关键词：

Lock-in thermography; I-V-characteristic; Organic solar cell; Simulation;

D O I：

10.1016/j.solmat.2009.11.006

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This article presents the lock-in thermography measurement technique applied to encapsulated organic heterojunction solar cells, built from poly(3-hexylthiophene) (P3HT) and 1-(3-methaoxycarbonyl)propyl-1-phenyl[6,6]C61 (PCBM). The realizable temperature resolution grants the possibility to visualize even very weak thermal losses in solar cells. The thermal behavior of the cells is demonstrated for different applied voltages. Especially, parallel and serial resistances can be spatially resolved. In order to explain the nonuniform behavior of the serial resistance a simplified replacement circuit of the organic cell is created, according to the Kirchhoff laws. The matrix of series and parallel resistivities allows the simulation of the currents flowing vertically through the semiconducting layer. Bias dependent simulations reveal that the considerable difference of the sheet resistances between the indium-tinoxide (ITO) and aluminum contacts is responsible for the experimentally observed inhomogeneous temperature profiles of the organic solar cells. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：642 / 647

页数：6

共 7 条

[1]

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[3]

HOPPE H, J APPL PHYS, P1605

[4]

HOPPE H, INFLUENCE POLYM SOLA

[5]

KAES M, 2003, THERMOGRAPHIEMESSUNG

[6]

PADINGER F, 2001, APPL PHYS LETT, V94

[7] Formation and impact of hot spots on the performance of organic photovoltaic cells [J].

Steim, Roland ;

Choulis, Stelios A. ;

Schilinsky, Pavel ;

Lemmer, Uli ;

Brabec, Christoph J. .

APPLIED PHYSICS LETTERS, 2009, 94 (04)

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