Unified Study of Recombination in Polymer:Fullerene Solar Cells Using Transient Absorption and Charge-Extraction Measurements

被引：27

作者：

Andersson, L. Mattias ^{[1
,2
]}

Melianas, Armantas ^{[2
]}

Infahasaeng, Yingyot ^{[1
]}

Tang, Zheng ^{[2
]}

Yartsev, Arkady ^{[1
]}

Inganas, Olle ^{[2
]}

Sundstrom, Villy ^{[1
]}

机构：

[1] Lund Univ, SE-22100 Lund, Sweden

[2] Linkoping Univ, Dept Phys Chem & Biol IFM, SE-58183 Linkoping, Sweden

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2013年 / 4卷 / 12期

基金：

瑞典研究理事会; 欧洲研究理事会;

关键词：

bulk heterojunction solar cell; conjugated polymer; fullerene; recombination;

D O I：

10.1021/jz4009745

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Recombination in the well-performing bulk heterojunction solar cell blend between the conjugated polymer TQ-1 and the substituted fullerene PCBM has been investigated with pump-probe transient absorption and charge extraction of photo-generated carriers (photo-CELIV). Both methods are shown to generate identical and overlapping data under appropriate experimental conditions. The dominant type of recombination is bimolecular with a rate constant of 7 x 10(-12) cm(-3) s(-1). This recombination rate is shown to be fully consistent with solar cell performance. Deviations from an ideal bimolecular recombination process, in this material system only observable at high pump fluences, are explained with a time-dependent charge-carrier mobility, and the implications of such a behavior for device development are discussed.

引用

页码：2069 / 2072

页数：4

共 17 条

[1] Photoinduced absorption in an alternating polyfluorene copolymer for photovoltaic applications [J].

Aarnio, H ;

Westerling, M ;

Österbacka, R ;

Svensson, M ;

Andersson, MR ;

Stubb, H .

CHEMICAL PHYSICS, 2006, 321 (1-2) :127-132

[2] Bipolar transport observed through extraction currents on organic photovoltaic blend materials [J].

Andersson, L. Mattias ;

Zhang, Fengling ;

Inganas, Olle .

APPLIED PHYSICS LETTERS, 2006, 89 (14)

[3] Charge transport and energetic disorder in polymer: fullerene blends [J].

Andersson, L. Mattias .

ORGANIC ELECTRONICS, 2011, 12 (02) :300-305

[4] From short to long - Optical and electrical transients in photovoltaic bulk heterojunctions of polyfluorene/fullerenes [J].

Andersson, L. Mattias ;

Inganas, Olle .

CHEMICAL PHYSICS, 2009, 357 (1-3) :120-123

[5] 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

[6] Geminate charge recombination in alternating polyfluorene Copolymer/Fullerene blends [J].

De, Swati ;

Pascher, Torbjorn ;

Maiti, Manisankar ;

Jespersen, Kim G. ;

Kesti, Tero ;

Zhang, Fengling ;

Inganas, Olle ;

Yartsev, Arkady ;

Sundstrom, Villy .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (27) :8466-8472

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

Deibel, C. ;

Baumann, A. ;

Dyakonov, V. .

APPLIED PHYSICS LETTERS, 2008, 93 (16)

[8] Optical Probes of Charge Generation and Recombination in Bulk Heterojunction Organic Solar Cells [J].

Howard, Ian A. ;

Laquai, Frederic .

MACROMOLECULAR CHEMISTRY AND PHYSICS, 2010, 211 (19) :2063-2070

[9]

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

[10] Time-dependent mobility and recombination of the photoinduced charge carriers in conjugated polymer/fullerene bulk heterojunction solar cells [J].

Mozer, AJ ;

Dennler, G ;

Sariciftci, NS ;

Westerling, M ;

Pivrikas, A ;

Osterbacka, R ;

Juska, G .

PHYSICAL REVIEW B, 2005, 72 (03)

← 1 2 →