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Dependence of switching probability on operation conditions in GexSe1-x ovonic threshold switching selectors

Chai, Z, Zhang, WD, Degraeve, R, Clima, S, Hatem, F, Zhang, JF, Freitas, P, Marsland, J, Fantini, A, Garbin, D, Goux, L and Kar, GS (2019) Dependence of switching probability on operation conditions in GexSe1-x ovonic threshold switching selectors. IEEE Electron Device Letters. ISSN 0741-3106

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Abstract

Ovonic threshold switching (OTS) selector is a promising candidate to suppress the sneak current paths in resistive switching memory (RRAM) arrays. Variations in the threshold voltage (Vth), and the hold voltage (Vhd) have been reported, but a quantitative analysis of the switching probability dependence on the OTS operation conditions is still missing. A novel characterization method is developed in this work, and the time-to-switch-on/off (ton/toff) at a constant VOTS is found following the Weibull distribution, based on which the dependence of switching probability on pulse bias and time can be extracted and extrapolated, and the switching probability can be ensured with appropriately chosen operation conditions. The difference between square and triangle switching pulses is also explained. This provides a practical guidance for predicting the switching probability under different operation conditions and for designing reliable one-selector-one-RRAM (1S1R) arrays.

Item Type: Article
Additional Information: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords: 0906 Electrical and Electronic Engineering
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering
Divisions: Electronics and Electrical Engineering
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date Deposited: 27 Jun 2019 08:15
Last Modified: 27 Jun 2019 08:15
DOI or Identification number: 10.1109/led.2019.2924270
URI: http://researchonline.ljmu.ac.uk/id/eprint/10940

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