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

Naoki Banno1,2, Toshitsugu Sakamoto1,2, Tsuyoshi Hasegawa2,3, Kazuya Terabe2,3 and Masakazu Aono2,3

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.

URL: http://jjap.jsap.jp/link?JJAP/45/3666/
DOI: 10.1143/JJAP.45.3666
KEYWORDS:solid electrolyte, electrochemical reaction, ion diffusion, programmable logic


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