Abstract
In this paper, nonvolatile bipolar resistive switching (BRS) as well as unipolar resistive switching (URS) effects are observed in diamond-like carbon (DLC) thin films prepared by the filtered cathodic vacuum arc technique. By controlling the current compliance, either bipolar or unipolar switching is obtained. The fabricated Al/DLC/W structure showing BRS exhibits good performance with a low operation voltage (<1.0 V) and a data retention time of >105 s. The mechanism of BRS is fitted by ohmic and SCLC laws in the low resistance state and high resistance state scenarios. Fuse and antifuse effects are proposed to be the principle for the URS behaviour.
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