TITLE

Double-crystal x-ray topographic determination of local strain in metal-oxide-semiconductor device structures

AUTHOR(S)
Qadri, Syed B.; Ma, David; Peckerar, Martin
PUB. DATE
November 1987
SOURCE
Applied Physics Letters;11/30/1987, Vol. 51 Issue 22, p1827
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A double-crystal x-ray topograph was used to determine local strain in metal-oxide-semiconductor (MOS) transistor test chips. The double-crystal machine could sense strains as small as 10-6, with a spatial resolution of a few micrometers. Results indicate that two types of strain are present: local surface strain as well as the more familiar strain due to bulk deformation of the crystal. Both types of strain have been correlated with surface mobility changes in n-channel metal-oxide-semiconductor (nMOS) transistors.
ACCESSION #
9825095

 

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