Composition and annealing effects in polythiophene/fullerene solar cells

被引：202
作者：
Kim, Y
Choulis, SA
Nelson, J
Bradley, DDC
Cook, S
Durrant, JR
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Dept Phys, Ctr Elect Mat & Devices, London SW7 2BW, England
[2] Univ London Imperial Coll Sci Technol & Med, Dept Chem, Ctr Elect Mat & Devices, London SW7 2AZ, England
来源：
JOURNAL OF MATERIALS SCIENCE | 2005年 / 40卷 / 06期
关键词：
D O I：
10.1007/s10853-005-0568-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have fabricated organic solar cells with blends of regioregular poly(3-hexylthiophene) (P3HT) and 1-(3-methoxycarbonyl)-propyl-1-phenyl-(6,6)C-61 (PCBM) as electron donor and electron acceptor, respectively. Blend composition and device annealing effects were investigated with optical absorption and photoluminescence spectroscopy, atomic force microscopy, photocurrent spectroscopy, and current-voltage characteristic measurements on devices under monochromatic or air mass (AM) 1.5 simulated solar light illumination. The highest efficiency was achieved for the 1:1 (P3HT:PCBM) weight ratio composition. The good performance is attributed to an optimized morphology that enables close intermolecular packing of P3HT chains. Inferior performance for the 1:2 composition is attributed to poorer intermolecular packing with increased PCBM content, while phase segregation on a sub-micron scale was observed for the 1:4 composition. The power conversion efficiency (AM 1.5) was doubled by the thermal annealing of devices at 140 degrees C to reach a value of 1.4%. (C) 2005 Springer Science + Business Media, Inc.
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收藏
页码：1371 / 1376
页数：6
相关论文
共 21 条
[1]  
Brabec CJ, 2001, ADV FUNCT MATER, V11, P15, DOI 10.1002/1616-3028(200102)11:1<15::AID-ADFM15>3.0.CO
[2]  
2-A
[3]   Effect of LiF/metal electrodes on the performance of plastic solar cells [J].
Brabec, CJ ;
Shaheen, SE ;
Winder, C ;
Sariciftci, NS ;
Denk, P .
APPLIED PHYSICS LETTERS, 2002, 80 (07) :1288-1290
[4]   EFFICIENT PHOTODIODES FROM INTERPENETRATING POLYMER NETWORKS [J].
HALLS, JJM ;
WALSH, CA ;
GREENHAM, NC ;
MARSEGLIA, EA ;
FRIEND, RH ;
MORATTI, SC ;
HOLMES, AB .
NATURE, 1995, 376 (6540) :498-500
[5]   Organic photovoltaic devices based on blends of regioregular poly(3-hexylthiophene) and poly(9.9-dioctylfluorene-co-benzothiadiazole) [J].
Kim, Y ;
Cook, S ;
Choulis, SA ;
Nelson, J ;
Durrant, JR ;
Bradley, DDC .
CHEMISTRY OF MATERIALS, 2004, 16 (23) :4812-4818
[6]  
KIM Y, 2004, IN PRESS PHYS REV B
[7]  
KIM Y, 2002, COMMUNICATION
[8]  
KIM Y, 2004, IN PRESS ADV FUNCT M
[9]  
KIM Y, 2005, IN PRESS APPL PHYS L
[10]   Electron transport in a methanofullerene [J].
Mihailetchi, VD ;
van Duren, JKJ ;
Blom, PWM ;
Hummelen, JC ;
Janssen, RAJ ;
Kroon, JM ;
Rispens, MT ;
Verhees, WJH ;
Wienk, MM .
ADVANCED FUNCTIONAL MATERIALS, 2003, 13 (01) :43-46
123