Dicyanoquinodimethane-substituted benzothiadiazole for efficient small-molecule solar cells

被引：22
作者：
Gautam, Prabhat [1 ]
Misra, Rajneesh [1 ]
Sharma, Ganesh D. [2 ]
机构：
[1] Indian Inst Technol, Dept Chem, Indore 452017, Madhya Pradesh, India
[2] Deemed Univ, LNM Inst Informat Technol, Dept Phys, Mol Elect & Optoelect Res Lab, Jaipur, Rajasthan, India
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2016年 / 18卷 / 10期
关键词：
POWER-CONVERSION EFFICIENCY; BULK; MORPHOLOGY; BENZODITHIOPHENE; 10-PERCENT; FUTURE;
D O I：
10.1039/c6cp00243a
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：
Two unsymmetrical donor-acceptor-acceptor-pi-acceptor type benzothiadiazoles (BTD3 and BTD4) functionalized with tetracyanobutadiene (TCBD) and dicyanoquinodimethane (DCNQ) modules, showing strong absorption in the visible region are reported. The bulk heterojunction solar cells based on BTD4:PC71BM and BTD3:PC71BM based active layers processed with chloroform (CF), thermal annealing and subsequent solvent vapor annealing, i.e. two step annealing (TSA), exhibited PCEs of up to 6.02% and 5.36%, respectively, which is significantly higher than those of the corresponding devices based on the as-cast blend active layer. This enhancement is related to the improvement in exciton dissociation efficiency and more balanced charge transport in the devices based on the active layer processed with TSA treatment.
引用
收藏
页码：7235 / 7241
页数：7
相关论文
共 21 条
[1]   Single-Junction Polymer Solar Cells Exceeding 10% Power Conversion Efficiency [J].
Chen, Jing-De ;
Cui, Chaohua ;
Li, Yan-Qing ;
Zhou, Lei ;
Ou, Qing-Dong ;
Li, Chi ;
Li, Yongfang ;
Tang, Jian-Xin .
ADVANCED MATERIALS, 2015, 27 (06) :1035-1041
[2]   High Performance Photovoltaic Applications Using Solution-Processed Small Molecules [J].
Chen, Yongsheng ;
Wan, Xiangjian ;
Long, Guankui .
ACCOUNTS OF CHEMICAL RESEARCH, 2013, 46 (11) :2645-2655
[3]   Design and Synthesis of Molecular Donors for Solution-Processed High-Efficiency Organic Solar Cells [J].
Coughlin, Jessica E. ;
Henson, Zachary B. ;
Welch, Gregory C. ;
Bazan, Guillermo C. .
ACCOUNTS OF CHEMICAL RESEARCH, 2014, 47 (01) :257-270
[4]   Donor-acceptor-π-acceptor based charge transfer chromophore as electron donors for solution processed small molecule organic bulk heterojunction solar cells [J].
Gautam, P. ;
Misra, R. ;
Siddiqui, S. A. ;
Sharma, G. D. .
ORGANIC ELECTRONICS, 2015, 19 :76-82
[5]   Unsymmetrical Donor-Acceptor-Acceptor-π-Donor Type Benzothiadiazole-Based Small Molecule for a Solution Processed Bulk Heterojunction Organic Solar Cell [J].
Gautam, Prabhat ;
Misra, Rajneesh ;
Siddiqui, Shahbaz A. ;
Sharma, Ganesh D. .
ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (19) :10283-10292
[6]   Solution-processed small molecule:fullerene bulk-heterojunction solar cells: impedance spectroscopy deduced bulk and interfacial limits to fill-factors [J].
Guerrero, Antonio ;
Loser, Stephen ;
Garcia-Belmonte, Germa ;
Bruns, Carson J. ;
Smith, Jeremy ;
Miyauchi, Hiroyuki ;
Stupp, Samuel I. ;
Bisquert, Juan ;
Marks, Tobin J. .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (39) :16456-16462
[7]  
He ZC, 2012, NAT PHOTONICS, V6, P591, DOI [10.1038/NPHOTON.2012.190, 10.1038/nphoton.2012.190]
[8]   Synthesis and Photovoltaic Properties of a Donor-Acceptor Copolymer of Dithienosilole and 5,6-Bis(octyloxy)benzo[1,2,5]thiadiazole [J].
Huang, Youguang ;
Zhang, Maojie ;
Jing, Yan ;
Fan, Huili ;
Guo, Xia ;
Li, Yongfang .
MACROMOLECULAR CHEMISTRY AND PHYSICS, 2012, 213 (23) :2529-2535
[9]   A Series of Simple Oligomer-like Small Molecules Based on Oligothiophenes for Solution-Processed Solar Cells with High Efficiency [J].
Kan, Bin ;
Li, Miaomiao ;
Zhang, Qian ;
Liu, Feng ;
Wan, Xiangjian ;
Wang, Yunchuang ;
Ni, Wang ;
Long, Guankui ;
Yang, Xuan ;
Feng, Huanran ;
Zuo, Yi ;
Zhang, Mingtao ;
Huang, Fei ;
Cao, Yong ;
Russell, Thomas P. ;
Chen, Yongsheng .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (11) :3886-3893
[10]   Solution-Processed Organic Solar Cells Based on Dialkylthiol-Substituted Benzodithiophene Unit with Efficiency near 10% [J].
Kan, Bin ;
Zhang, Qian ;
Li, Miaomiao ;
Wan, Xiangjian ;
Ni, Wang ;
Long, Guankui ;
Wang, Yunchuang ;
Yang, Xuan ;
Feng, Huanran ;
Chen, Yongsheng .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (44) :15529-15532
123