Novel isoindigo-based conjugated polymers for solar cells and field effect transistors

被引:32
作者
Mahmood, Khalid [1 ]
Liu, Zheng-Ping [1 ]
Li, Cuihong [1 ]
Lu, Zhen [1 ]
Fang, Tao [1 ]
Liu, Xiao [1 ]
Zhou, Jianjun [1 ]
Lei, Ting [2 ]
Pei, Jian [2 ]
Bo, Zhishan [1 ]
机构
[1] Beijing Normal Univ, Coll Chem, Beijing Key Lab Energy Convers & Storage Mat, Beijing 100187, Peoples R China
[2] Peking Univ, Beijing Natl Lab Mol Sci, Key Lab Bioorgan Chem & Mol Engn, Minist Educ,Coll Chem & Mol Engn, Beijing 100871, Peoples R China
关键词
BAND-GAP POLYMERS; DESIGN RULES; DONOR; EFFICIENCY; COPOLYMERS;
D O I
10.1039/c3py00341h
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 new isoindigo containing donor-acceptor (D-A) type conjugated polymers were synthesized by palladium catalyzed Suzuki polycondensation and used as donor materials for polymer solar cells (PSCs) and field effect transistors (FETs). All the polymers possess good solubility in common organic solvents, high thermal stability, and broad absorption in the range of 300 to 750 nm. These polymers have narrow band gaps (1.66 to 1.70 eV) and low lying HOMO energy levels (5.15 to 5.31 eV). Hole mobilities of these polymers are in the range of 1.78 x 10 (-)3 to 2.62 x 10(-3) cm(2) V-1 s(-1). PSCs based on P3:PC71BM (1 : 2, by weight) gave the best device performance with a power conversion efficiency (PCE) of 1.75%, a short-circuit current density (J(sc)) of 4.74 mA cm(-2), an open-circuit voltage (V-oc) of 0.81 V, and a fill factor (FF) of 0.45, indicating these polymers can be promising donor polymers for polymer solar cells.
引用
收藏
页码:3563 / 3574
页数:12
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