Exemplified calculation of stress migration in a 90nm node via structure

authored by

Kirsten Weide-Zaage

Abstract

An exemplified calculation of migration effects especially stress migration was carried out for a via structure of 90nm node dimensions with narrow and wide lines. The process-induced stress was considered in the simulations. For the first time the mass flux divergence was determined using an user routine which allows the direct calculation of the divgrad(x) terms in the mass flux divergence equation. The investigated cases show a very good correlation between simulation and measurements from literature for the separated calculations of the migration effects. Calculations with a reference temperature of the stress free state are found not to be sufficient for the calculation of the stress distribution as well as mass flux divergence distribution.

Organisation(s)

Laboratorium f. Informationstechnologie

Type

Conference contribution

Publication date

2010

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Computational Theory and Mathematics, Electrical and Electronic Engineering, Theoretical Computer Science

Electronic version(s)

https://doi.org/10.1109/ESIME.2010.5464542 (Access: Unknown)