Program charge effect on random telegraph noise amplitude and its device structural dependence in SONOS flash memory

J. P. Chiu, Y. L. Chou, H. C. Ma, Ta-Hui Wang, S. H. Ku, N. K. Zou, Vincent Chen, W. P. Lu, K. C. Chen, Chih Yuan Lu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Nitride program charge effects on random telegraph noise (RTN) in SONOS flash cells are investigated. We measure and simulate RTN amplitudes in floating gate flash, planar SONOS, and FinFET SONOS cells. We find that a planar SONOS has a wide spread in RTN amplitude after programming while a floating gate flash cell has identical RTN amplitude in erase and program states. The spread of program-state RTN amplitudes in a planar SONOS is attributed to a current-path percolation effect caused by random discrete nitride charges. The program-state RTN spread can be significantly reduced in FinFET SONOS.

Original languageEnglish
Title of host publication2009 International Electron Devices Meeting, IEDM 2009 - Technical Digest
DOIs
StatePublished - 1 Dec 2009
Event2009 International Electron Devices Meeting, IEDM 2009 - Baltimore, MD, United States
Duration: 7 Dec 20099 Dec 2009

Publication series

NameTechnical Digest - International Electron Devices Meeting, IEDM
ISSN (Print)0163-1918

Conference

Conference2009 International Electron Devices Meeting, IEDM 2009
CountryUnited States
CityBaltimore, MD
Period7/12/099/12/09

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