A Thieno[2,3-b]pyridine-Flanked Diketopyrrolopyrrole Polymer as an n-Type Polymer Semiconductor for All-Polymer Solar Cells and Organic Field-Effect Transistors

被引:60
作者
Chen, Hung-Yang [1 ,2 ]
Nikolka, Mark [3 ]
Wadsworth, Andrew [1 ,2 ]
Yue, Wan [1 ,2 ,5 ]
Onwubiko, Ada [1 ,2 ]
Xiao, Mingfei [3 ]
White, Andrew J. P. [1 ,2 ]
Baran, Derya [1 ,2 ,4 ]
Sirringhaus, Henning [3 ]
McCulloch, Iain [1 ,2 ,4 ]
机构
[1] Imperial Coll London, Dept Chem, London SW7 2AZ, England
[2] Imperial Coll London, Ctr Plast Elect, London SW7 2AZ, England
[3] Univ Cambridge, Cavendish Lab, JJ Thompson Ave, Cambridge CB3 OHE, England
[4] KAUST, KSC, Thuwal 239556900, Saudi Arabia
[5] Sun Yat Sen Univ, Sch Mat & Mat Engn, Minist Educ, Key Lab Polymer Composite & Funct Mat, Guangzhou 510275, Guangdong, Peoples R China
基金
英国工程与自然科学研究理事会;
关键词
HIGH-MOBILITY; CONJUGATED POLYMERS; ELECTRON-MOBILITY; SIDE-CHAIN; ABSORPTION; DONOR; COPOLYMER; TRANSPORT; ACCEPTOR; DESIGN;
D O I
10.1021/acs.macromol.7b00934
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A novel fused heterocycle-flanked diketopyrrolopyrrole (DPP) monomer, thieno[2,3-b]pyridine diketopyrrolopyrrole (TPDPP), was designed and synthesized. When copolymerized with 3,4-difluorothiophene using Stille coupling polymerization, the new polymer pTPDPP-TF possesses a highly planar conjugated polymer backbone due to the fused thieno[2,3-b]pyridine flanking unit that effectively alleviates the steric hindrance with both the central DPP core and the 3,4-difluorothiophene repeat unit. This new polymer exhibits a high electron affinity (EA) of -4.1 eV and was successfully utilized as an n-type polymer semiconductor for applications in organic field-effect transistors (OFETs) and all polymer solar cells. A promising n-type charge carrier mobility of 0.1 cm(2) V-1 s(-1) was obtained in bottom-contact, top-gate OFETs, and a power conversion efficiency (PCE) of 2.72% with a high open circuit voltage (V-OC) of 1.04 V was achieved for all polymer solar cells using PTB7-Th as the polymer donor.
引用
收藏
页码:71 / 79
页数:9
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