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

[11] Origin of Reduced Bimolecular Recombination in Blends of Conjugated Polymers and Fullerenes [J].

Murthy, D. H. K. ;

Melianas, Armantas ;

Tang, Zheng ;

Juska, Gytis ;

Arlauskas, Kestutis ;

Zhang, Fengling ;

Siebbeles, Laurens D. A. ;

Inganas, Olle ;

Savenije, Tom J. .

ADVANCED FUNCTIONAL MATERIALS, 2013, 23 (34) :4262-4268

[12] Ultrafast Terahertz Photoconductivity of Bulk Heterojunction Materials Reveals High Carrier Mobility up to Nanosecond Time Scale [J].

Ponseca, Carlito S., Jr. ;

Yartsev, Arkady ;

Wang, Ergang ;

Andersson, Mats R. ;

Vithanage, Dimali ;

Sundstrom, Villy .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (29) :11836-11839

[13] Charge extraction analysis of charge carrier densities in a polythiophene/fullerene solar cell: Analysis of the origin of the device dark current [J].

Shuttle, C. G. ;

Maurano, A. ;

Hamilton, R. ;

O'Regan, B. ;

de Mello, J. C. ;

Durrant, J. R. .

APPLIED PHYSICS LETTERS, 2008, 93 (18)

[14] Bimolecular recombination losses in polythiophene: Fullerene solar cells [J].

Shuttle, C. G. ;

O'Regan, B. ;

Ballantyne, A. M. ;

Nelson, J. ;

Bradley, D. D. C. ;

Durrant, J. R. .

PHYSICAL REVIEW B, 2008, 78 (11)

[15] Unification of the hole transport in polymeric field-effect transistors and light-emitting diodes [J].

Tanase, C ;

Meijer, EJ ;

Blom, PWM ;

de Leeuw, DM .

PHYSICAL REVIEW LETTERS, 2003, 91 (21)

[16] Interlayer for Modified Cathode in Highly Efficient Inverted ITO-Free Organic Solar Cells [J].

Tang, Zheng ;

Andersson, L. Mattias ;

George, Zandra ;

Vandewal, Koen ;

Tvingstedt, Kristofer ;

Heriksson, Patrik ;

Kroon, Renee ;

Andersson, Mats R. ;

Inganas, Olle .

ADVANCED MATERIALS, 2012, 24 (04) :554-+

[17] An Easily Synthesized Blue Polymer for High-Performance Polymer Solar Cells [J].

Wang, Ergang ;

Hou, Lintao ;

Wang, Zhongqiang ;

Hellstrom, Stefan ;

Zhang, Fengling ;

Inganas, Olle ;

Andersson, Mats R. .

ADVANCED MATERIALS, 2010, 22 (46) :5240-5244

← 1 2 →