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Metal-Insulator-Semiconductor Coaxial Microfibers Based on Self-Organization of Organic Semiconductor: Polymer Blend for Weavable, Fibriform Organic Field-Effect Transistors

Authors
Kim, Hae MinKang, Hyun WookHwang, Do KyungLim, Ho SunJu, Byeong-KwonLim, Jung Ah
Issue Date
Apr-2016
Publisher
WILEY-V C H VERLAG GMBH
Keywords
electronic fibers; fluid coating on fiber; organic field-effect transistor; phase-separation; polymer blend
Citation
ADVANCED FUNCTIONAL MATERIALS, v.26, no.16, pp 2706 - 2714
Pages
9
Journal Title
ADVANCED FUNCTIONAL MATERIALS
Volume
26
Number
16
Start Page
2706
End Page
2714
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/9865
DOI
10.1002/adfm.201504972
ISSN
1616-301X
1616-3028
Abstract
With the increasing importance of electronic textiles as an ideal platform for wearable electronic devices, requirements for the development of functional electronic fibers with multilayered structures are increasing. In this paper, metal-polymer insulator-organic semiconductor (MIS) coaxial microfibers using the self-organization of organic semiconductor: insulating polymer blends for weavable, fibriform organic field-effect transistors (FETs) are demonstrated. A holistic process for MIS coaxial microfiber fabrication, including surface modification of gold microfiber thin-film coating on the microfiber using a die-coating system, and the self-organization of organic semiconductor-insulator polymer blend is presented. Vertical phase-separation of the organic semiconductor: insulating polymer blend film wrapping the metal microfibers provides a coaxial bilayer structure of gate dielectric (inside) and organic semiconductor (outside) with intimate interfacial contact. It is determined that the fibriform FETs based on MIS coaxial microfiber exhibit good charge carrier mobilities that approach the values of typical devices with planar substrate. It additionally exhibits electrical property uniformity over the entire fiber surface and improved bending durability. Fibriform organic FET embedded in a textile is demonstrated by weaving MIS coaxial microfibers with cotton and conducting threads, which verifies the feasibility of MIS coaxial microfiber for use in electronic textile applications.
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