Determination of polaron lifetime and mobility in a polymer/fullerene solar cell by means of photoinduced absorption

被引：18

作者：

Arndt, C

Zhokhavets, U ^{[1
]}

Mohr, M

Gobsch, G

Al-Ibrahim, M

Sensfuss, S

机构：

[1] Tech Univ Ilmenau, Inst Phys, D-98684 Ilmenau, Germany

[2] TITK Inst, Dept Funct Polymer Syst, D-07407 Rudolstadt, Germany

来源：

SYNTHETIC METALS | 2004年 / 147卷 / 1-3期

关键词：

photoinduced absorption; organic solar cell; polaron lifetime; polaron mobility;

D O I：

10.1016/j.synthmet.2004.06.037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigated the recombination dynamics of polarons in a bulk heterojunction MDMO-PPV/PCBM solar cell on flexible plastic substrates (PET) by means of photoinduced absorption spectroscopy. This cell gives 3% AM 1.5 power conversion efficiency. The mean polaron lifetime was deduced from measurements of photoinduced signal at different chopper frequencies. Further on, the influence of an applied electric field on the mean polaron lifetime was studied. It was found, it decreases with increasing external voltage. This decrease is a consequence of the transport of the charge carriers to and their discharge at the electrodes. We propose a simple model to describe this phenomenon, from which the polaron mobility was calculated. (C) 2004 Elsevier B.V. All rights reserved.

引用

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页码：257 / 260

页数：4

相关论文

共 12 条

[1]

Blom P.W.M., 1997, PHYS REV B, V55, P656

[2] Tracing photoinduced electron transfer process in conjugated polymer/fullerene bulk heterojunctions in real time [J].

Brabec, CJ ;

Zerza, G ;

Cerullo, G ;

De Silvestri, S ;

Luzzati, S ;

Hummelen, JC ;

Sariciftci, S .

CHEMICAL PHYSICS LETTERS, 2001, 340 (3-4) :232-236

[3] Electrical and optical design and characterisation of regioregular poly(3-hexylthiophene-2,5diyl)/fullerene-based heterojunction polymer solar cells [J].

Chirvase, D ;

Chiguvare, Z ;

Knipper, A ;

Parisi, J ;

Dyakonov, V ;

Hummelen, JC .

SYNTHETIC METALS, 2003, 138 (1-2) :299-304

[4] Dispersive dynamics of photoexcitations in conjugated polymers measured by photomodulation spectroscopy [J].

Epshtein, O ;

Nakhmanovich, G ;

Eichen, Y ;

Ehrenfreund, E .

PHYSICAL REVIEW B, 2001, 63 (12)

[5] Injection- and space charge limited-currents in doped conducting organic materials [J].

Jain, SC ;

Geens, W ;

Mehra, A ;

Kumar, V ;

Aernouts, T ;

Poortmans, J ;

Mertens, R ;

Willander, M .

JOURNAL OF APPLIED PHYSICS, 2001, 89 (07) :3804-3810

[6] PHOTOINDUCED ELECTRON-TRANSFER REACTIONS IN MIXED FILMS OF PI-CONJUGATED POLYMERS AND A HOMOLOGOUS SERIES OF TETRACYANO-P-QUINODIMETHANE DERIVATIVES [J].

JANSSEN, RAJ ;

CHRISTIAANS, MPT ;

HARE, C ;

MARTIN, N ;

SARICIFTCI, NS ;

HEEGER, AJ ;

WUDL, F .

JOURNAL OF CHEMICAL PHYSICS, 1995, 103 (20) :8840-8845

[7] ULTRAFAST SPECTROSCOPIC STUDIES OF PHOTOINDUCED ELECTRON-TRANSFER FROM SEMICONDUCTING POLYMERS TO C-60 [J].

KRAABEL, B ;

MCBRANCH, D ;

SARICIFTCI, NS ;

MOSES, D ;

HEEGER, AJ .

PHYSICAL REVIEW B, 1994, 50 (24) :18543-18552

[8] Effects of postproduction treatment on plastic solar cells [J].

Padinger, F ;

Rittberger, RS ;

Sariciftci, NS .

ADVANCED FUNCTIONAL MATERIALS, 2003, 13 (01) :85-88

[9] 2.5% efficient organic plastic solar cells [J].

Shaheen, SE ;

Brabec, CJ ;

Sariciftci, NS ;

Padinger, F ;

Fromherz, T ;

Hummelen, JC .

APPLIED PHYSICS LETTERS, 2001, 78 (06) :841-843

[10] Excited state spectroscopy in polymer fullerene photovoltaic devices under operation conditions [J].

Winder, C ;

Lungenschmied, C ;

Matt, G ;

Sariciftci, NS ;

Nogueira, AF ;

Montanari, I ;

Durrant, JR ;

Arndt, C ;

Zhokhavets, U ;

Gobsch, G .

SYNTHETIC METALS, 2003, 139 (03) :577-580