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Crystalline Organic Heterostructures Engineering Based on Vanadyl Phthalocyanine and Rod-Like Conjugated Organic Semiconductors with Selected Central Groups

Authors

  • Lizhen Huang,

    1. State Key Laboratory of Polymer, Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
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  • Feng Zhu,

    Corresponding author
    1. Leibniz Institute of Solid State and Materials Research Dresden, Dresden 01069, Germany
    • Leibniz Institute of Solid State and Materials Research Dresden, Dresden 01069, Germany
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  • Chengfang Liu,

    1. State Key Laboratory of Polymer, Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
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  • Uwe Treske,

    1. Leibniz Institute of Solid State and Materials Research Dresden, Dresden 01069, Germany
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  • Mandy Grobosch,

    1. Leibniz Institute of Solid State and Materials Research Dresden, Dresden 01069, Germany
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  • Hongkun Tian,

    1. State Key Laboratory of Polymer, Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
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  • Jidong Zhang,

    1. State Key Laboratory of Polymer, Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
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  • Yanhou Geng,

    1. State Key Laboratory of Polymer, Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
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  • Martin Knupfer,

    1. Leibniz Institute of Solid State and Materials Research Dresden, Dresden 01069, Germany
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  • Donghang Yan

    Corresponding author
    1. State Key Laboratory of Polymer, Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
    • State Key Laboratory of Polymer, Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China.
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Abstract

The effect of groups in conjugated molecules on films’ interface morphology, electronic structure, and charge transport behavior is explored utilizing a series of crystalline organic heterostructures that are constructed by four rod-like molecules and vanadyl phthalocyanine (VOPc). The four rod-like molecules, which possess the same biphenyl endgroup but different central groups, present similar growth behavior along with different thin film structural parameters and electronic structures. The changes of the structure parameters result in diverse morphology of the VOPc/rod-like molecule heterostructure because of the different lattice mismatch. The electronic structure differences in rod-like molecules cause different interface electronic structure of the heterostructure. Under the conjunct effect of morphology and interface electronic structure, the transistors based on the crystalline heterostructures present diverse charge transport behavior and field-effect mobilities. These results provide a clue for the development of crystalline organic heterostructure engineering and tailoring overall organic device performance through molecular design in local inducing layer.

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