期刊
ADVANCED FUNCTIONAL MATERIALS
卷 26, 期 16, 页码 2706-2714出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201504972
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资金
- Institutional Research Program of the Korea Institute of Science and Technology (KIST) [2E25430]
- Ministry of Science, ICT & Future Planning, Republic of Korea [2E25430] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [21A20131712412] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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