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Cited by 256

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Si/a-Si Core/Shell Nanowires as Nonvolatile Crossbar Switches

Dong, Yajie, Yu, Guihua, McAlpine, Michael C., Lu, Wei, Lieber, Charles M.·2008·Nano Letters
DOI 10.1021/nl073224p
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Abstract

Radial core/shell nanowires (NWs) represent an important class of nanoscale building blocks with substantial potential for exploring fundamental electronic properties and realizing novel device applications at the nanoscale. Here, we report the synthesis of crystalline silicon/amorphous silicon (Si/a-Si) core/shell NWs and studies of crossed Si/a-Si NW metal NW (Si/a-Si x M) devices and arrays. Room-temperature electrical measurements on single Si/a-Si x Ag NW devices exhibit bistable switching between high (off) and low (on) resistance states with well-defined switching threshold voltages, on/off ratios greater than 10(4), and current rectification in the on state. Temperature-dependent switching experiments suggest that rectification can be attributed to barriers to electric field-driven metal diffusion. Systematic studies of Si/a-Si x Ag NW devices show that (i) the bit size can be at least as small as 20 nm x 20 nm, (ii) the writing time is <100 ns, (iii) the retention time is >2 weeks, and (iv) devices can be switched >10(4) times without degradation in performance. In addition, studies of dense one-dimensional and two-dimensional Si/a-Si x Ag NW devices arrays fabricated on crystalline and plastic substrates show that elements within the arrays can be independently switched and read, and moreover that bends with radii of curvature as small as 0.3 cm cause little change in device characteristics. The Si/a-Si x Ag NW devices represent a highly scalable and promising nanodevice element for assembly and fabrication of dense nonvolatile memory and programmable nanoprocessors.

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Metadata

Authors
Dong, Y., Yu, G., McAlpine, M. C., Lu, W., & Lieber, C. M.
Venue
Nano Letters
Publisher
American Chemical Society (ACS)
Published
2008-01-26
Volume
8
Issue
2
Pages
386-391
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
DOI
10.1021/nl073224p
OpenAlex
W1967670695
Cited by
256
References
2
FWCI
24.50
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Si/a-Si Core/Shell Nanowires as Nonvolatile Crossbar Switches. https://app.cochat.ai/papers/10.1021/nl073224p
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Dong, Y., Yu, G., McAlpine, M. C., Lu, W., & Lieber, C. M. (2008). Si/a-Si Core/Shell Nanowires as Nonvolatile Crossbar Switches. Nano Letters. https://doi.org/10.1021/nl073224p

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