Understanding the Halogenation Effects in Diketopyrrolopyrrole-Based Small Molecule Photovoltaics

被引：36
|
作者：
Sun, Shi-Xin [1 ]
Huo, Yong [1 ]
Li, Miao-Miao [3 ,4 ]
Hu, Xiaowen [2 ]
Zhang, Hai-Jun [3 ,4 ]
Zhang, You-Wen [1 ]
Zhang, You-Dan [1 ]
Chen, Xiao-Long [1 ]
Shi, Zi-Fa [1 ]
Gong, Xiong [2 ]
Chen, Yongsheng [3 ,4 ]
Zhang, Hao-Li [1 ]
机构：
[1] Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Special Funct Mat & Struct Design MOE, SKLAOC, Lanzhou 730000, Peoples R China
[2] Univ Akron, Coll Polymer Sci & Engn, Dept Polymer Engn, Akron, OH 44236 USA
[3] Nankai Univ, Coll Chem, Inst Polymer Chem, Tianjin 300071, Peoples R China
[4] Nankai Univ, Coll Chem, Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300071, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 36期
基金：
中国国家自然科学基金;
关键词：
solution-processed small molecules; diketopyrrolopyrrole; organic solar cells; halogenation effect; device optimization; ORGANIC SOLAR-CELLS; POWER CONVERSION EFFICIENCY; CONJUGATED POLYMERS; RATIONAL DESIGN; FILL FACTORS; BENZODITHIOPHENE; OLIGOTHIOPHENES; RECOMBINATION; SUBSTITUENTS; DERIVATIVES;
D O I：
10.1021/acsami.5b03488
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Two molecules containing a central diketopyrrolopyrrole and two oligothiophene units have been designed and synthesized. Comparisons between the molecules containing terminal F (FDPP) and Cl (CDPP) atoms allowed us to evaluate the effects of halogenation on the photovoltaic properties of the small molecule organic solar cells (OSCs). The OSCs devices employing FDPP:PC71BM films showed power conversion efficiencies up to 4.32%, suggesting that fluorination is an efficient method for constructing small molecules for OSCs.
引用
收藏
页码：19914 / 19922
页数：9
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