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Updated: Mar 9, 2026

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Published on: December 21, 2017
Hole Mobility and Electron Injection Properties of D-A Conjugated Copolymers with Fluorinated Phenylene Acceptor
Ming Wang1, Michael J Ford2, Alexander T Lill1
1Center for Polymer and Organic Solids, Mitsubishi Chemical Center for Advanced Materials, Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, USA.
Abstract:
A novel wide-gap conjugated polymer PhF2,5 (Eg = 1.9 eV) is designed to contain alternating cyclopentadithiophene and difluorophenylene unit with the goal of favoring unipolar organic field effect transistor characteristics. The higher lowest unoccupied molecular orbital energy of PhF2,5 increases the barrier to electron injection, leading to unipolar transport and higher on/off ratios, without sacrificing desirable high hole mobilities.
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