Synthesis and Photovoltaic Characterization of Dithieno[ 3,2-b: 2', 3'-d] thiophene-Derived Narrow-Bandgap Polymers

被引：11
作者：
Zhu, Enwei [1 ]
Ni, Bin [1 ]
Zhao, Baofeng [2 ]
Hai, Jiefeng [1 ]
Bian, Linyi [1 ]
Wu, Hongbin [2 ]
Tang, Weihua [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Minist Educ, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China
[2] S China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2014年 / 215卷 / 03期
基金：
中国国家自然科学基金;
关键词：
dithieno[3,2-b:2 ',3 '-d]thiophene; narrow-bandgap polymers; polymer solar cells; OPEN-CIRCUIT VOLTAGE; CONJUGATED POLYMERS; SOLAR-CELL; COPOLYMERS; PERFORMANCE; DIKETOPYRROLOPYRROLE; DITHIENOTHIOPHENE; TANDEM; BENZOTHIADIAZOLE; PLATINUM;
D O I：
10.1002/macp.201300669
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Three novel dithieno[3,2-b:2',3'-d]thiophene-based low-bandgap polymers are synthesized by a Suzuki-Miyaura coupling reaction or by direct arylation polycondensation. The polymers present a high molecular weight (26-32 kDa) and narrow polydiversity (1.3-1.7). With a highest occupied molecular orbital (HOMO) energy level around -5.20 eV, these polymers exhibit a narrow bandgap of 1.75-1.87 eV. All the polymers display strong absorption in the range of 350-700 nm. Bulk-heterojunction (BHJ) solar cells are further fabricated by blending the as-prepared polymer with (6,6)-phenyl-C-61-butyric acid methyl ester (PC61BM) at different weight ratios. The best devices contribute a power conversion efficiency (PCE) of 0.73% under AM 1.5 (100 mW cm(-2)).
引用
收藏
页码：227 / 234
页数：8
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