Date of Award

1-1-2017

Language

English

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

College/School/Department

Department of Nanoscale Science and Engineering

Program

Nanoscale Engineering

Content Description

1 online resource (ii, xx, 155 pages) : illustrations (some color)

Dissertation/Thesis Chair

James R Lloyd

Committee Members

Hassaram Bakhru, Christopher Borst, Ernest N Levine, Bhaskar Nagabhirava

Keywords

Electromigration, Microstructure, Modeling, Reliability, Simulation, Young’s Modulus, Interconnects (Integrated circuit technology), Copper, Anisotropy, Nanostructured materials

Subject Categories

Materials Science and Engineering | Nanoscience and Nanotechnology

Abstract

Copper interconnects are typically polycrystalline and follow a lognormal grain size distribution. Polycrystalline copper interconnect microstructures with a lognormal grain size distribution were obtained with a Voronoi tessellation approach. The interconnect structures thus obtained were used to study grain growth mechanisms, grain boundary scattering, scattering dependent resistance of interconnects, stress evolution, vacancy migration, reliability life times, impact of orientation dependent anisotropy on various mechanisms, etc. In this work, the microstructures were used to study the impact of microstructure and elastic anisotropy of copper on thermal and electromigration induced failure.

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