Interface-engineered resistive memory using plasma-modified electrode on polyimide substrate

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Abstract

In this study, we report a low power Ni/GeOx /TiOy /TaN resistive random access memory (RRAM) using plasma-modified electrode. The low sub-mA switching current, highly uniform switching cycles (only 4% variation for the set) and good high-temperature current distribution at 125 °C are simultaneously achieved in this RRAM device. Such good performance can be ascribed to interface plasma treatment on TaN electrode where the resulting Ta–N ionic bond increases the oxidation resistance and reduces the oxygen vacancy concentration near TaN interface that is favorable to lower switching power and improve high-temperature current distribution.

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(© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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