A high molecular weight triisopropylsilylethynyl (TIPS)-benzodithiophene and diketopyrrolopyrrole-based copolymer for high performance organic photovoltaic cells

A high-molecular-weight conjugated polymer consisting of alternating TIPS-substituted benzo[1,2-b:4,5-b']dithiop hene (BDT) and diketopyrrolo[3,4-c]pyrrole (DPP) was synthesized by Suzuki cross-coupling and characterized for use in high performance OPVs. Good structural order, self-assembly in...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2014-01, Vol.2 (18), p.6348-6352
Main Authors: Kim, Ji-Hoon, Lee, Minjung, Yang, Hoichang, Hwang, Do-Hoon
Format: Article
Language:English
Subjects:
Carrier mobility
Copolymers
Devices
Energy conversion efficiency
Molecular weight
Self assembly
Solar cells
Sustainability
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Summary:A high-molecular-weight conjugated polymer consisting of alternating TIPS-substituted benzo[1,2-b:4,5-b']dithiop hene (BDT) and diketopyrrolo[3,4-c]pyrrole (DPP) was synthesized by Suzuki cross-coupling and characterized for use in high performance OPVs. Good structural order, self-assembly in spun-cast films, and carrier mobility were observed. PTIPSBDT-DPP showed an OFET hole mobility of up to 0.12 cm super(2) V super(-1) s super(-1). Power conversion efficiencies of up to 8.0% were demonstrated for OPV devices.
ISSN:2050-7488
2050-7496
DOI:10.1039/c4ta00535j