Solution-processable polymer based photovoltaic devices with concentration graded bilayers made via composition control of a poly(3-hexylthiophene)/[6,6]-phenyl C61-butyric acidmethyl ester

被引:24
作者
Wang, Dong Hwan [1 ]
Choi, Dae-Geun [2 ]
Park, O. Ok [1 ]
Park, Jong Hyeok [3 ]
机构
[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, BK Grad Program 21, Taejon 305701, South Korea
[2] KIMM, Nanomech Syst Res Div, Taejon 305343, South Korea
[3] Sungkyunkwan Univ, Dept Chem Engn, Suwon 440746, South Korea
关键词
HETEROJUNCTION SOLAR-CELLS; EFFICIENCY; OPTIMIZATION; MORPHOLOGY; SOLVENT;
D O I
10.1039/b926105b
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
The bulk-heterojunction (BHJ) active layer, prepared by a spin-coating process, has been extensively investigated for its large donor-acceptor interfacial contact area, which can result in increased photo-current density. It is known that a concentration graded structure would enhance not only the charge generation but also charge transport, but, it is very difficult to exhibit such structure in BHJ system. The reason is that the morphology of the BHJ originates from self organization during the thermal annealing step. In this paper, polymer based photovoltaic (PV) devices with concentration graded bilayers have been successfully fabricated for the first time by solution process with various composition controlled poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C-61-butyric acidmethyl ester (PCBM) mixtures. The concentration profiles have been confirmed by Auger electron spectroscopy. The optimized bilayer devices with uniform morphology show enhanced photocurrent density and power conversion efficiency when compared to those exhibited by BHJ based PV devices.
引用
收藏
页码:4910 / 4915
页数:6
相关论文
共 36 条
[1]   Organic tandem solar cells: A review [J].
Ameri, Tayebeh ;
Dennler, Gilles ;
Lungenschmied, Christoph ;
Brabec, Christoph J. .
ENERGY & ENVIRONMENTAL SCIENCE, 2009, 2 (04) :347-363
[2]   Effect of P3HT:PCBM concentration in solvent on performances of organic solar cells [J].
Baek, Woon-Hyuk ;
Yang, Hyun ;
Yoon, Tae-Sik ;
Kang, C. J. ;
Lee, Hyun Ho ;
Kim, Yong-Sang .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2009, 93 (08) :1263-1267
[3]   Bipolar charge transport in poly(3-hexyl thiophene)/methanofullerene blends: A ratio dependent study [J].
Baumann, A. ;
Lorrmann, J. ;
Deibel, C. ;
Dyakonov, V. .
APPLIED PHYSICS LETTERS, 2008, 93 (25)
[4]   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
[5]  
Brabec CJ, 2001, ADV FUNCT MATER, V11, P15, DOI 10.1002/1616-3028(200102)11:1<15::AID-ADFM15>3.0.CO
[6]  
2-A
[7]   Influence of nanomorphology on the photovoltaic action of polymer-fullerene composites [J].
Chirvase, D ;
Parisi, J ;
Hummelen, JC ;
Dyakonov, V .
NANOTECHNOLOGY, 2004, 15 (09) :1317-1323
[8]   Dramatic photoluminescence quenching of phenylene vinylene oligomer thin films upon submonolayer Ca deposition [J].
Choong, V ;
Park, Y ;
Gao, Y ;
Wehrmeister, T ;
Mullen, K ;
Hsieh, BR ;
Tang, CW .
APPLIED PHYSICS LETTERS, 1996, 69 (10) :1492-1494
[9]   Polymer-Fullerene Bulk-Heterojunction Solar Cells [J].
Dennler, Gilles ;
Scharber, Markus C. ;
Brabec, Christoph J. .
ADVANCED MATERIALS, 2009, 21 (13) :1323-1338
[10]  
Heeger AJ, 2001, ANGEW CHEM INT EDIT, V40, P2591, DOI 10.1002/1521-3773(20010716)40:14<2591::AID-ANIE2591>3.0.CO