Enhancing the efficiency of low bandgap conducting polymer bulk heterojunction solar cells using P3HT as a morphology control agent

被引:46
作者
Chang, Sheng-Yung [1 ]
Liao, Hsueh-Chung [2 ]
Shao, Yu-Tsun [3 ]
Sung, Yu-Ming [3 ]
Hsu, Sheng-Hao [4 ]
Ho, Chun-Chih [2 ]
Su, Wei-Fang [2 ]
Chen, Yang-Fang [3 ]
机构
[1] Natl Taiwan Univ, Grad Inst Appl Phys, Taipei 10617, Taiwan
[2] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 10617, Taiwan
[3] Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
[4] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 10617, Taiwan
关键词
CHARGE-TRANSPORT; PERFORMANCE; SENSITIZATION; POLY(3-HEXYLTHIOPHENE); RECOMBINATION; CRYSTALLIZATION; POLYTHIOPHENE; ENHANCEMENT; FLUORENE; BLENDS;
D O I
10.1039/c2ta00990k
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 development of low bandgap conducting polymers has made bulk heterojunction solar cells a viable low cost renewable energy source. The high boiling point of 1,8-diiodooctane (DIO) is usually used to control the morphology of the active layer consisting of a conducting polymer and PCBM, so that a high power conversion solar cell can be achieved. We report here an alternative approach using nonvolatile, crystalline and conducting P3HT as an effective morphology control agent. A model system of PCPDTBT/PC61BM was selected for this study. The change of optoelectronic properties with the introduction of P3HT was monitored by measuring the absorption spectra and charge carrier mobility, and the morphology change with the introduction of P3HT in the active layer was monitored by AFM, TEM, and GIXRD. The results indicate that favorable bi-continuous phase separation and appropriate domain size of each phase can be achieved to facilitate fast charge transport, and thus improve the power conversion efficiency of the solar cell. By adding 1 wt% P3HT into the blend of PCPDTBT/PC61BM, the power conversion efficiency can be improved by 20%. Moreover, with the incorporation of 1 wt% P3HT to the blend of PCPDTBT/PC61BM with DIO, the power conversion efficiency can be further increased by 17%. The strategy of this study can be expanded to other low bandgap conducting polymers for high efficiency bulk heterojunction solar cells.
引用
收藏
页码:2447 / 2452
页数:6
相关论文
共 37 条
[1]   The Role of Alkane Dithiols in Controlling Polymer Crystallization in Small Band Gap Polymer:Fullerene Solar Cells [J].
Agostinelli, Tiziano ;
Ferenczi, Toby A. M. ;
Pires, E. ;
Foster, Samuel ;
Maurano, Andrea ;
Mueller, Christian ;
Ballantyne, Amy ;
Hampton, Mark ;
Lilliu, Samuele ;
Campoy-Quiles, Mariano ;
Azimi, Hamed ;
Morana, Mauro ;
Bradley, Donal D. C. ;
Durrant, James ;
Macdonald, J. Emyr ;
Stingelin, Natalie ;
Nelson, Jenny .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2011, 49 (10) :717-724
[2]   Performance Enhancement of the P3HT/PCBM Solar Cells through NIR Sensitization Using a Small-Bandgap Polymer [J].
Ameri, Tayebeh ;
Min, Jie ;
Li, Ning ;
Machui, Florian ;
Baran, Derya ;
Forster, Michael ;
Schottler, Kristina J. ;
Dolfen, Daniel ;
Scherf, Ullrich ;
Brabec, Christoph J. .
ADVANCED ENERGY MATERIALS, 2012, 2 (10) :1198-1202
[3]   Charge Transport and Recombination in Low-Bandgap Bulk Heterojunction Solar Cell using Bis-adduct Fullerene [J].
Azimi, Hamed ;
Senes, Alessia ;
Scharber, Markus C. ;
Hingerl, Kurt ;
Brabec, Christoph J. .
ADVANCED ENERGY MATERIALS, 2011, 1 (06) :1162-1168
[4]   A low-bandgap poly(2,7-carbazole) derivative for use in high-performance solar cells [J].
Blouin, Nicolas ;
Michaud, Alexandre ;
Leclerc, Mario .
ADVANCED MATERIALS, 2007, 19 (17) :2295-+
[6]  
Camaioni N, 2002, ADV MATER, V14, P1735, DOI 10.1002/1521-4095(20021203)14:23<1735::AID-ADMA1735>3.0.CO
[7]  
2-O
[8]   Low-bandgap poly(thiophene-phenylene-thiophene) derivatives with broaden absorption spectra for use in high-performance bulk-heterojunction polymer solar cells [J].
Chen, Chih-Ping ;
Chan, Shu-Hua ;
Chao, Teng-Chih ;
Ting, Ching ;
Ko, Bao-Tsan .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (38) :12828-12833
[9]   Improved Film Morphology Reduces Charge Carrier Recombination into the Triplet Excited State in a Small Bandgap Polymer-Fullerene Photovoltaic Cell [J].
Di Nuzzo, Daniele ;
Aguirre, Aranzazu ;
Shahid, Munazza ;
Gevaerts, Veronique S. ;
Meskers, Stefan C. J. ;
Janssen, Rene A. J. .
ADVANCED MATERIALS, 2010, 22 (38) :4321-+
[10]   Multi-Length-Scale Morphologies in PCPDTBT/PCBM Bulk-Heterojunction Solar Cells [J].
Gu, Yu ;
Wang, Cheng ;
Russell, Thomas P. .
ADVANCED ENERGY MATERIALS, 2012, 2 (06) :683-690