Ag:SiOxNy-Based Bilayer ReRAM Structure with Self-Limiting Bidirectional Threshold Switching Characteristics for Cross-Point Array Application

Tae Ho Lee, Dae Yun Kang, Tae Geun Kim

    Research output: Contribution to journalArticlepeer-review

    23 Citations (Scopus)

    Abstract

    We fabricate a Pt/Ag:SiOxNy/Ti programmable metallization cell exhibiting bidirectional threshold switching (TS) or nonvolatile resistive switching (RS) characteristics through a simple thermal annealing process. The cell composed of pristine Ag:SiOxNy layers showed self-limiting TS characteristics with high selectivity and extremely low OFF currents, whereas the same cell showed typical RS characteristics after thermal annealing at 250 °C. The operating mechanism was investigated using scanning transmission electron microscopy and X-ray photoelectron spectroscopy. Next, a Ag:SiOxNy-based one selector-one resistor device was fabricated by employing both TS and RS characteristics in a single cell, which exhibited excellent self-rectifying memory performance.

    Original languageEnglish
    Pages (from-to)33768-33772
    Number of pages5
    JournalACS Applied Materials and Interfaces
    Volume10
    Issue number40
    DOIs
    Publication statusPublished - 2018 Oct 10

    Bibliographical note

    Funding Information:
    This work was supported by a National Research Foundation of Korea (NRF) grant, funded by the Korean government (Ministry of Science, ICT & Future Planning, 2016R1A3B1908249). The authors thank the Samsung Semiconductor Research Center in Korea University for its support.

    Funding Information:
    This work was supported by a National Research Foundation of Korea (NRF) grant, funded bythe Korean government (Ministry of Science, ICT & Future Planning 2016R1A3B1908249). The authors thank the Samsung Semiconductor Research Center in Korea University for its support.

    Publisher Copyright:
    © 2018 American Chemical Society.

    Keywords

    • conductive channel
    • crossbar array
    • programmable metallization cell
    • resistive switching
    • sneak current
    • threshold switching

    ASJC Scopus subject areas

    • General Materials Science

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