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http://dx.doi.org/10.5573/ieie.2014.51.8.172

Improved Distribution of Threshold Switching Device by Reactive Nitrogen and Plasma Treatment  

Kim, DongSik (Dept. of Computer Systems & Engineering, Inha Technical College)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.51, no.8, 2014 , pp. 172-177 More about this Journal
Abstract
We present on a threshold switching device based on AsGeTeSi material which is significantly improved by two $N_2$ processes: reactive $N_2$ during deposition, and $N_2$ plasma hardening. The introduction of N2 in the two-step processing enables a stackable and thermally stable device structure, is allowing integration of switch and memory devices for application in nano scale array circuits. Despite of its good threshold switching characteristics, AsTeGeSi-based switches have had key issues with reliability at a high temperature to apply resistive memory. This is usually due to a change in a Te concentration. However, our chalconitride switches(AsTeGeSiN) show high temperature stability as well as high current density over $1.1{\times}10^7A/cm^2$ at $30{\times}30(nm^2)$ celll. A cycling performance of the switch was over $10^8$ times. In addition, we demonstrated a memory cell consisted of 1 switch-1 resistor (1S-1R) stack structure using a TaOx resistance memory with the AsTeGeSiN select device.
Keywords
Threshold switching device; AsTeGeSiN; Chalconitride; Resistance memory;
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