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Browsing by Author "Huang, Hsin-Hau"

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    Threshold Vacuum Switch (TVS) on 3D-Stackable and 4F(2) Cross-Point Bipolar and Unipolar Resistive Random Access Memory
    (2012-01-01)
    Ho, ChiaHua
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    Huang, Hsin-Hau
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    Lee, Ming-Taou
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    Hsu, Cho-Lun
    ;
    Lai, Tung-Yen
    A 3D stackable and bidirectional Threshold Vacuum Switching (TVS) selector using the same WO x material as the RRAM element is reported. It provides the highest reported current density of >10(8) A/cm(2) and the highest selectivity of >10(5). Stress test at high current density indicates >10(8) cycle capability for Reset/Set operation. A mechanism based on recombination of oxygen-ions and vacancies is proposed for the observed volatile switching of TVS. Utilizing the threshold characteristics of the TVS selector, a two-step reading waveform offers potential for 3D-stackable and 4F(2) cross-point RRAM applications.