Jpn. J. Appl. Phys. 45 (2006) pp. 3666-3668 |Previous Article| |Next Article| |Table of Contents|
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Effect of Ion Diffusion on Switching Voltage of Solid-Electrolyte Nanometer Switch
1Fundamental and Environmental Research Labs., NEC Corp., Tsukuba, Ibaraki 305-8501, Japan
2ICORP, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
3Nanomaterials Laboratory, NIMS, Tsukuba, Ibaraki 305-0003, Japan
(Received September 30, 2005; accepted November 15, 2005; published online April 25, 2006)
A solid electrolyte switch turns on or off when a metallic bridge is formed or dissolved respectively in the solid electrolyte (here we use Cu2-αS). For logic applications, the switching voltage (<0.3 V) should be larger than the operating voltage of the logic circuit (about 1 V). We reveal that the switching voltage is mainly affected by Cu+ ionic transport in Cu2-αS and that a solid electrolyte with an ion diffusion coefficient smaller than that of Cu2-αS by several tens of orders of magnitude makes it possible to increase the switching voltage to 1 V.
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