A scanning tunneling microscopy study: Si/SiO2: Interface roughness induced by chemical etching

Jixin Yu, Lequn Liu, Joseph W. Lyding

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Si/SiO2 interface roughness has received tremendous interest due to its relation to channel mobility degradation and dielectric reliability. We have used ultra-high vacuum scanning tunneling microscopy to directly examine the Si/SiO2 interface and study the roughening effect caused by chemical etching. The rms-roughness extracted quantitatively from the STM topography was found to be doubled from 0.111 nm to 0.232nm by the normal NH4OH/H2O2 treatment, and further increased to 0.285nm for additional etching steps. It was also found that there were no regular single steps on the SiO2/Si(100)) interface.

Original languageEnglish (US)
Title of host publicationScanning-Probe and Other Novel Microscopies of Local Phenomena in Nanostructured Materials
PublisherMaterials Research Society
Pages44-49
Number of pages6
ISBN (Print)1558997865, 9781558997868
DOIs
StatePublished - 2004
Event2004 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 28 2004Dec 3 2004

Publication series

NameMaterials Research Society Symposium Proceedings
Volume838
ISSN (Print)0272-9172

Other

Other2004 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA
Period11/28/0412/3/04

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'A scanning tunneling microscopy study: Si/SiO2: Interface roughness induced by chemical etching'. Together they form a unique fingerprint.

Cite this