Solvent Effect Leading to High Performance of Bulk Heterojunction Polymer Solar Cells by Novel Polysilafluorene Derivatives

被引：15
作者：
Cai, Wanzhu [1 ,2 ]
Wang, Ming [1 ,2 ]
Zhang, Jie [1 ,2 ]
Wang, Ergang [1 ,2 ]
Yang, Tingbing [1 ,2 ]
He, Chao [1 ,2 ]
Moon, Ji Sun [4 ]
Wu, Hongbin [1 ,2 ]
Gong, Xiong [1 ,2 ,3 ]
Cao, Yong [1 ,2 ]
机构：
[1] S China Univ Technol, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Peoples R China
[2] Minist Educ, Key Lab Specially Funct Mat, Guangzhou 510640, Peoples R China
[3] Univ Akron, Dept Polymer Engn, Akron, OH 44315 USA
[4] Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 05期
基金：
美国国家科学基金会;
关键词：
EFFICIENCY; MORPHOLOGY;
D O I：
10.1021/jp106365z
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：
An amount of 3% of power conversion efficiency (PCE) was observed from bulk heterojunction (BHJ) polymer, solar cells (PSCs) using a novel stole-containing polymer, poly-(2,7-(9',9'-silafluorene)-alt-5',5'-(4,7-bis(3'-hexyl-2,2'-bithiophen-5-yl)benzo [c] [1,2,5]thiadiazole)) (PSiF-BBT) blended with a fullerene derivative, [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM). Moreover, PCEs and short-circuit currents (J(sc)) of BHJ PSCs processed from chloroform solution were 50% increased from that of chlorobenzene solution. The studies of optical and electric properties and morphology information obtained from atomic force microscopy (AFM) and transmission electron microscopy (TEM) showed that the absorption coefficient of polymer thin films was enhanced, and the formed polymer-rich fibrillar domains were responsible for the improved device performance.
引用
收藏
页码：2314 / 2319
页数：6
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