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Issue 37, 2017
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Fabrication of planarly-oriented polycrystalline thin films of smectic liquid crystalline organic semiconductors

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Abstract

Fabrication of planarly-oriented polycrystalline thin films of organic semiconductors was investigated, in which molecules sit parallel, i.e., “face-on” on the substrate so as to allow vertical charge transport favorably through a thin film. With the aid of self-organization of liquid crystalline molecules and an over-coated orientation layer, tens of nm thin films vertically oriented can be re-oriented from “hemeotropic, or vertical” to “homogenous or planar” to achieve polycrystalline thin films planarly oriented after removing the over-coated orientation layer. We investigated the key factors to affect re-orientation of the films and uniformity and surface morphology of the resulting films, including conditions required for the re-orientation and properties of the orientation layer materials and liquid crystals.

Graphical abstract: Fabrication of planarly-oriented polycrystalline thin films of smectic liquid crystalline organic semiconductors

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Publication details

The article was received on 01 Jul 2017, accepted on 21 Aug 2017 and first published on 22 Aug 2017


Article type: Paper
DOI: 10.1039/C7SM01303E
Citation: Soft Matter, 2017,13, 6499-6505
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    Fabrication of planarly-oriented polycrystalline thin films of smectic liquid crystalline organic semiconductors

    Y. Wang, H. Iino and J. Hanna, Soft Matter, 2017, 13, 6499
    DOI: 10.1039/C7SM01303E

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