Photo-Carrier Recombination in Polymer Solar Cells Based on P3HT and Silole-Based Copolymer

被引：56

作者：

Chen, Song ^{[2
]}

Choudhury, Kaushik Roy ^{[2
]}

Subbiah, Jegadesan ^{[2
]}

Amb, Chad M. ^{[1
]}

Reynolds, John R. ^{[1
]}

So, Franky ^{[2
]}

机构：

[1] Univ Florida, Dept Chem, George & Josephine Butler Polymer Res Lab, Ctr Macromol Sci & Engn, Gainesville, FL 32611 USA

[2] Univ Florida, Dept Mat Sci & Engn, Gainesville, FL 32611 USA

来源：

ADVANCED ENERGY MATERIALS | 2011年 / 1卷 / 05期

关键词：

CHARGE-TRANSPORT; PHOTOCURRENT GENERATION; ELECTRON-TRANSFER; PERFORMANCE; EFFICIENCY; SILICON;

D O I：

10.1002/aenm.201100300

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：

Photo-current loss in donor-acceptor (DA) polymer-fullerene bulk heterojunction solar cells was studied via carrier transport and recombination measurements. Focusing on the DA polymer poly((4,4-dioctyldithieno (3,2-b:2',3'-d) silole)-2,6-diyl-alt-(2,1,3-benzothiadiazole)-4,7-diyl) (DTS-BTD) we found that the carrier transport is well-balanced and attribute the loss mechanism in DTS-BTD solar cells to carrier recombination. Using carrier extraction with linear increasing voltage (photo-CELIV) and transient photo-voltage (TPV), we show that carrier recombination plays an important role in photo-current extraction at open circuit conditions due to increase in photo-excited carrier concentration. Delay time dependent photo-CELIV and temperature dependent transport studies suggest that the recombination rate is related to the degree of energetic disorder in the polymer: fullerene blends.

引用

页码：963 / 969

页数：7

共 36 条

[1] Electronic structure of amorphous silicon nanoclusters [J].

Allan, G ;

Delerue, C ;

Lannoo, M .

PHYSICAL REVIEW LETTERS, 1997, 78 (16) :3161-3164

[2]

[Anonymous], 2011, J AM CHEM SOC, V133, P8344

[3] 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

[4] HOPPING TRANSPORT IN PROTOTYPICAL ORGANIC GLASSES [J].

BASSLER, H ;

SCHONHERR, G ;

ABKOWITZ, M ;

PAI, DM .

PHYSICAL REVIEW B, 1982, 26 (06) :3105-3113

[5] Device physics of polymer:fullerene bulk heterojunction solar cells [J].

Blom, Paul W. M. ;

Mihailetchi, Valentin D. ;

Koster, L. Jan Anton ;

Markov, Denis E. .

ADVANCED MATERIALS, 2007, 19 (12) :1551-1566

[6] Polymer solar cells with enhanced open-circuit voltage and efficiency [J].

Chen, Hsiang-Yu ;

Hou, Jianhui ;

Zhang, Shaoqing ;

Liang, Yongye ;

Yang, Guanwen ;

Yang, Yang ;

Yu, Luping ;

Wu, Yue ;

Li, Gang .

NATURE PHOTONICS, 2009, 3 (11) :649-653

[7] Understanding the performance and loss-mechanisms in donor-acceptor polymer based solar cells: Photocurrent generation, charge separation and carrier transport [J].

Choudhury, Kaushik Roy ;

Subbiah, Jegadesan ;

Chen, Song ;

Beaujuge, Pierre M. ;

Amb, Chad M. ;

Reynolds, John R. ;

So, Franky .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2011, 95 (08) :2502-2510

[8] Charge carrier mobility and lifetime versus composition of conjugated polymer/fullerene bulk-heterojunction solar cells [J].

Dennler, G ;

Mozer, AJ ;

Juska, G ;

Pivrikas, A ;

Österbacka, R ;

Fuchsbauer, A ;

Sariciftci, NS .

ORGANIC ELECTRONICS, 2006, 7 (04) :229-234

[9]

Fishchuk I.I., 2007, Physical Review B, P76

[10] Recombination in Annealed and Nonannealed Polythiophene/Fullerene Solar Cells: Transient Photovoltage Studies versus Numerical Modeling [J].

Hamilton, Rick ;

Shuttle, Christopher G. ;

O'Regan, Brian ;

Hammant, Thomas C. ;

Nelson, Jenny ;

Durrant, James R. .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2010, 1 (09) :1432-1436

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