A novel junctionless all-around-gate SONOS device with a quantum nanowire on a bulk substrate for 3D stack NAND flash memory

  • Sung Jin Choi
  • , Dong Il Moon
  • , J. P. Duarte
  • , Sungho Kim
  • , Yang Kyu Choi

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

39 Scopus citations

Abstract

A novel junctionless all-around-gate (AAG) SONOS device with a homogeneously n+-doped silicon nanowire (SiNW) is demonstrated on a bulk substrate. The diameter and gate length of the quantum-scale SiNW are 4 nm and 20 nm, respectively. A deep RIE process is developed for the formation of the SiNWs. The junctionless AAG SONOS device shows a high read current (> 10 μA), a large VT margin (> 6.5 V), a narrowed distribution of the erased VT, and improved cyclic endurance (105 cycles). Moreover, the proposed process is applied to implement vertically integrated 9-layer single-crystal SiNWs for 3D NAND.

Original languageEnglish
Title of host publication2011 Symposium on VLSI Technology, VLSIT 2011 - Digest of Technical Papers
Pages74-75
Number of pages2
StatePublished - 2011
Event2011 Symposium on VLSI Technology, VLSIT 2011 - Kyoto, Japan
Duration: 14 Jun 201116 Jun 2011

Publication series

NameDigest of Technical Papers - Symposium on VLSI Technology
ISSN (Print)0743-1562

Conference

Conference2011 Symposium on VLSI Technology, VLSIT 2011
Country/TerritoryJapan
CityKyoto
Period14/06/1116/06/11

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