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 cm2 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 (VOC) of 1.04 V was achieved for all polymer solar cells using PTB7-Th as the polymer donor.
|Original language||English (US)|
|Number of pages||9|
|State||Published - Jan 9 2018|
Bibliographical noteFunding Information:
The authors thank KAUST for financial support and acknowledge EC FP7 Project SC2 (610115) EC H2020 (643791), and EPSRC Projects EP/G037515/1 and EP/ M005143/1. Mingfei Xiao thanks the Cambridge Overseas Trust and Chinese Scholarship Council for PhD funding.
© 2017 American Chemical Society.
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry
FingerprintDive into the research topics of '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'. Together they form a unique fingerprint.
CCDC 1540600: Experimental Crystal Structure Determination : 3-bromothieno[2,3-b]pyridine-6-carbonitrile
Chen, H. (Creator), Nikolka, M. (Creator), Wadsworth, A. (Creator), Yue, W. (Creator), Onwubiko, A. (Creator), Xiao, M. (Creator), White, A. J. P. (Creator), Baran, D. (Creator), Sirringhaus, H. (Creator), McCulloch, I. (Creator), Chen, H. (Creator), Nikolka, M. (Creator), Wadsworth, A. (Creator), Yue, W. (Creator), Onwubiko, A. (Creator), Xiao, M. (Creator), White, A. J. P. (Creator) & Sirringhaus, H. (Creator), Cambridge Crystallographic Data Centre, Mar 16 2018
DOI: 10.5517/ccdc.csd.cc1nq3s8, http://hdl.handle.net/10754/663979