Control of tunneling gap between nanocrystals by introduction of solution processed interfacial layers for wearable sensor applications

Md Ashraf Hossain, Sanghyun Jeon, Junhyuk Ahn, Hyungmok Joh, Junsung Bang, Soong Ju Oh

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)

    Abstract

    In this study, we introduce a strategy to introduce solution-processed interfacial layers in nanocrystal (NC) thin films to fabricate high-performance strain sensors. SiO 2 interfacial layers are chemically introduced in ligand-exchanged Ag NC thin films to increase the tunneling gap or inter-particle distance between each Ag NC. In this way, the charge-transport mechanism is manipulated, leading to unique electromechanical properties with a high gauge factor. All solution-processed strain gauge sensors with high stability, durability, and sensitivity are fabricated. The sensor successfully measured delicate movements such as finger motions, demonstrating its possible application in electronic skin.

    Original languageEnglish
    Pages (from-to)214-220
    Number of pages7
    JournalJournal of Industrial and Engineering Chemistry
    Volume73
    DOIs
    Publication statusPublished - 2019 May 25

    Bibliographical note

    Funding Information:
    This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science, ICT and Future Planning ( 2016R1C1B2006534 ). This was also supported by Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT ( NRF-2018M3D1A1059001 ). This research was also supported by Korea Electric Power Corporation ( R18XA06-02 ).

    Funding Information:
    This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science, ICT and Future Planning (2016R1C1B2006534). This was also supported by Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT (NRF-2018M3D1A1059001). This research was also supported by Korea Electric Power Corporation (R18XA06-02).

    Publisher Copyright:
    © 2019 The Korean Society of Industrial and Engineering Chemistry

    Keywords

    • SiO interfacial layers
    • Silver nanocrystal
    • Solution process
    • Strain sensor
    • Tunneling gap

    ASJC Scopus subject areas

    • General Chemical Engineering

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