An Ultra-fast Multi-level MoTe2-based RRAM

Published: January 17, 2019


Albert Davydov, Leonid A. Bendersky, Sergiy Krylyuk, Huairuo Zhang, Feng Zhang, Joerg Appenzeller, Pragya R. Shrestha, Kin P. Cheung, Jason P. Campbell


We report multi-level MoTe2-based resistive random-access memory (RRAM) devices with switching speeds of less than 5 ns due to an electric-field induced 2H to 2Hd phase transition. Different from conventional RRAM devices based on ionic migration, the MoTe2-based RRAMs offer intrinsically better reliability and control. In comparison to phase change memory (PCM)-based devices that operate based on a change between an amorphous and a crystalline structure, our MoTe2-based RRAM devices allow faster switching due to a transition between two crystalline states. Moreover, utilization of atomically thin 2D materials allows for aggressive scaling and high-performance flexible electronics applications. Multi-level stable states and synaptic devices were realized in this work, and operation of the devices in their low-resistive, high-resistive and intrinsic states was quantitatively described by a novel model.
Proceedings Title: An Ultra-fast Multi-level MoTe2-based RRAM
Conference Dates: January 12-December 5, 2018
Conference Location: san Francisco, CA
Conference Title: 2018 IEEE International Electron Device Meeting
Pub Type: Conferences


2D materials, MoTe2, RRAM, phase change memory, synaptic devices, TEM
Created January 17, 2019, Updated September 16, 2019