Oxygen doping of P3HT:PCBM blends: Influence on trap states, charge carrier mobility and solar cell performance

被引：266

作者：

Schafferhans, Julia ^{[1
]}

Baumann, Andreas ^{[1
]}

Wagenpfahl, Alexander ^{[1
]}

Deibel, Carsten ^{[1
]}

Dyakonov, Vladimir ^{[1
,2
]}

机构：

[1] Univ Wurzburg, Fac Phys & Astron, D-97074 Wurzburg, Germany

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

来源：

ORGANIC ELECTRONICS | 2010年 / 11卷 / 10期

关键词：

Organic solar cells; Oxygen; Degradation; TSC; CELIV; Macroscopic simulation; RECOMBINATION; DEGRADATION; TRANSPORT;

D O I：

10.1016/j.orgel.2010.07.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigated the influence of oxygen on the performance of P3HT:PCBM (poly(3-hexylthiophene):[6,6]-phenyl C61 butyric acid methyl ester) solar cells by current-voltage, thermally stimulated current (TSC) and charge extraction by linearly increasing voltage (CELIV) measurement techniques. The exposure to oxygen leads to an enhanced charge carrier concentration and a decreased charge carrier mobility. Further, an enhanced formation of deeper traps was observed, although the overall density of traps was found to be unaffected upon oxygen exposure. With the aid of macroscopic simulations, based on solving the differential equation system of Poisson, continuity and drift-diffusion equations in one dimension, we demonstrate the influence of a reduced charge carrier mobility and an increased charge carrier density on the main solar cell parameters, consistent with experimental findings. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1693 / 1700

页数：8

共 23 条

[1] Interaction of oxygen with conjugated polymers: Charge transfer complex formation with poly(3-alkylthiophenes)
Abdou, MSA
Orfino, FP
Son, Y
Holdcroft, S
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (19) : 4518 - 4524
[2] Analytical model for the open-circuit voltage and its associated resistance in organic planar heterojunction solar cells
Cheyns, D.
Poortmans, J.
Heremans, P.
Deibel, C.
Verlaak, S.
Rand, B. P.
Genoe, J.
[J]. PHYSICAL REVIEW B, 2008, 77 (16):
[3] Origin of reduced polaron recombination in organic semiconductor devices
Deibel, C.
Wagenpfahl, A.
Dyakonov, V.
[J]. PHYSICAL REVIEW B, 2009, 80 (07)
[4] Influence of charge carrier mobility on the performance of organic solar cells
Deibel, Carsten
Wagenpfahl, Alexander
Dyakonov, Vladimir
[J]. PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2008, 2 (04): : 175 - 177
[5] Charge carrier dissociation and recombination in polymer solar cells
Deibel, Carsten
[J]. PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2009, 206 (12): : 2731 - 2736
[6] Solar cell efficiency tables (version 35)
Green, Martin A.
Emery, Keith
Hishikawa, Yoshihiro
Warta, Wilhelm
[J]. PROGRESS IN PHOTOVOLTAICS, 2010, 18 (02): : 144 - 150
[7] Extraction current transients: New method of study of charge transport in microcrystalline silicon
Juska, G
Arlauskas, K
Viliunas, M
Kocka, J
[J]. PHYSICAL REVIEW LETTERS, 2000, 84 (21) : 4946 - 4949
[8] Charge-carrier trapping in polyfluorene-type conjugated polymers
Kadashchuk, A
Schmechel, R
von Seggern, H
Scherf, U
Vakhnin, A
[J]. JOURNAL OF APPLIED PHYSICS, 2005, 98 (02)
[9] Carrier mobilities and influence of oxygen in C60 films
Könenkamp, R
Priebe, G
Pietzak, B
[J]. PHYSICAL REVIEW B, 1999, 60 (16) : 11804 - 11808
[10] Light intensity dependence of open-circuit voltage of polymer:fullerene solar cells -: art. no. 123509
Koster, LJA
Mihailetchi, VD
Ramaker, R
Blom, PWM
[J]. APPLIED PHYSICS LETTERS, 2005, 86 (12) : 1 - 3

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