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Communication-Hourglass-Shaped Metal-Filament Switching Device with Multi-Layer (AlOX/TiO2) Oxide Electrolytes

Title
Communication-Hourglass-Shaped Metal-Filament Switching Device with Multi-Layer (AlOX/TiO2) Oxide Electrolytes
Authors
Lim, SWoo, JLee, SPark, JHwang, H
POSTECH Authors
Hwang, H
Date Issued
Jul-2016
Publisher
ELECTROCHEMICAL SOC INC
Abstract
This paper proposes using hourglass-shaped metal filaments to improve the ON/OFF resistance ratio and retention characteristics of switching devices used in reconfigurable logic applications. These filaments are obtained by controlling the Cu-ion mobility in multi-layer oxide electrolytes. By adopting an upper AlOX and lower TiO2 electrolyte layers with respectively low and high Cu-ion mobility, we could form hourglass-shaped filaments as a result of suppressed Cu-ion injection and enhanced filament lateral growth. The hourglass-shaped metal filaments induced local Joule heating at the filament constriction, thus accelerating RESET operations. We confirmed that, as a result, Cu/AlOX/TiO2/W devices show high ON/OFF resistance ratios (>10(6)) and similar to 10-year retention properties at 80 degrees C. (C) The Author(s) 2016. Published by ECS. All rights reserved.
URI
http://oasis.postech.ac.kr/handle/2014.oak/37717
DOI
10.1149/2.0031609jss
ISSN
2162-8769
Article Type
Article
Citation
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, vol. 5, no. 9, page. Q219 - Q221, 2016-07
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 HWANG, HYUNSANG
Dept of Materials Science & Enginrg
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