Integration and reliability of copper magnesium alloys for multilevel interconnects

Abstract

This paper discusses the deposition, integration, performance, and reliability of copper-magnesium alloys in interconnect structures for state of the art integrated circuits. A detailed discussion of process-related characteristics will be presented. Special emphasis is given here on the adhesion and diffusion properties of copper-magnesium. Furthermore, electrical performance of test structures using copper-magnesium and results from electromigration testing are being presented.