Charge carrier concentration and temperature dependent recombination in polymer-fullerene solar cells

被引：93

作者：

Foertig, A. ^{[1
,2
]}

Baumann, A. ^{[1
]}

Rauh, D. ^{[1
,2
]}

Dyakonov, V. ^{[1
,2
]}

Deibel, C. ^{[1
]}

机构：

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

[2] Bavarian Ctr Appl Energy Res ZAE Bayern, D-97074 Wurzburg, Germany

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 05期

关键词：

carrier density; electron-hole recombination; fullerene compounds; organic semiconductors; photoconductivity; photovoltaic effects; polymers; solar cells; EQUILIBRIUM TRANSPORT REGIME; DIFFUSION; TRAPS; DRIFT;

D O I：

10.1063/1.3202389

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We performed temperature dependent transient photovoltage and photocurrent measurements on poly(3-hexylthiophene):[6,6]-phenyl-C(61) butyric acid methyl ester bulk heterojuction solar cells. We found a strongly charge carrier concentration and temperature dependent Langevin recombination prefactor. The observed recombination mechanism is discussed in terms of bimolecular recombination. The experimental results were compared with charge carrier extraction by linearly increasing voltage measurements done on the same blend system. We explain the charge carrier dynamics, following an apparent order larger than two, by dynamic trapping of charges in the tail states of the Gaussian density of states.

引用

页数：3

共 13 条

[1] DRIFT AND DIFFUSION IN MATERIALS WITH TRAPS .2. NON-EQUILIBRIUM TRANSPORT REGIME [J].

ARKHIPOV, VI ;

RUDENKO, AI .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1982, 45 (02) :189-207

[2] CHARGE TRANSPORT IN DISORDERED ORGANIC PHOTOCONDUCTORS - A MONTE-CARLO SIMULATION STUDY [J].

BASSLER, H .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1993, 175 (01) :15-56

[3] Polaron recombination in pristine and annealed bulk heterojunction solar cells [J].

Deibel, C. ;

Baumann, A. ;

Dyakonov, V. .

APPLIED PHYSICS LETTERS, 2008, 93 (16)

[4]

DEIBEL C, PHYS REV B IN PRESS

[5] Solar Cell Efficiency Tables (Version 33) [J].

Green, Martin A. ;

Emery, Keith ;

Hishikawa, Yoshihiro ;

Warta, Wilhelm .

PROGRESS IN PHOTOVOLTAICS, 2009, 17 (01) :85-94

[6] Non-Langevin bimolecular recombination in low-mobility materials [J].

Juska, G. ;

Arlauskas, K. ;

Stuchlik, J. ;

Österbacka, R. .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 2006, 352 (9-20) :1167-1171

[7] Extraction current transients: New method of study of charge transport in microcrystalline silicon [J].

Juska, G ;

Arlauskas, K ;

Viliunas, M ;

Kocka, J .

PHYSICAL REVIEW LETTERS, 2000, 84 (21) :4946-4949

[8]

Langevin P, 1903, ANN CHIM PHYS, V28, P433

[9] Bulk heterojunction solar cells with internal quantum efficiency approaching 100% [J].

Park, Sung Heum ;

Roy, Anshuman ;

Beaupre, Serge ;

Cho, Shinuk ;

Coates, Nelson ;

Moon, Ji Sun ;

Moses, Daniel ;

Leclerc, Mario ;

Lee, Kwanghee ;

Heeger, Alan J. .

NATURE PHOTONICS, 2009, 3 (05) :297-U5

[10]

Pope M., 1999, Electronic Processes in Organic Crystals and Polymers

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