Journal
ACS NANO
Volume 3, Issue 9, Pages 2760-2766Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn9006225
Keywords
graphitic carbon; CVD; nanoscale devices; resistive switching; nonvolatile memories; graphene
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Reported here are easily accessible memory devices based upon stripes of chemical vapor deposited (CVD) nanosized irregular discs of graphitic material that can be layered in stripes <= 10 nm thick with controllable lengths and widths. These lithographic graphitic stripes, which can be easily fabricated in large quantities in parallel by conventional fabrication techniques (such as CVD and photo- or e-beam lithography), with yields > 95%, are shown to exhibit voltage-induced switching behavior, which can be used for two-terminal memories. These memories are stable, rewritable, and nonvolatile with ON/OFF ratios up to 10(7), switching times down to 1 mu s (tested limit), and switching voltages down to 3-4 V. The major functional parameters of these lithographic memories are shown to be scalable with the devices' dimensions.
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