Improving Resistance Switching Characteristics with SiGeO(x)/SiGeON Double Layer for Nonvolatile Memory Applications

Abstract

The switching layer with SiGeO(x)/SiGeON structure is investigated to improve the electrical characteristics of resistive nonvolatile memory. A bipolar resistance switching behavior owning inferior stability was observed in Pt/SiGeO(x)/TiN memory cells. To obtain practical memory, a convenient and compatible SiGeON (similar to 5 nm) is introduced at SiGeO(x)/anode interface to stabilize the disruption length of filaments near anode electrode. Compared with Pt/SiGeO(x)/TiN memory cells, the proposed Pt/SiGeO(x)/SiGeON/TiN cells is effective at minimizing the dispersions of memory switching parameters. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3615823] All rights reserved.