Cu/Low-k Thickness Measurement for Advanced Cu CMP Process Development and Control

Autor: Li, Yunlong, Heylen, Nancy, Delande, Tinne, Kellens, Kristof, Ong, Patrick, Leunissen, Leonardus, Tarnowka, Alexandre, Eliyahu, Aviv
Zdroj: ECS Transactions; March 2009, Vol. 18 Issue: 1 p453-458, 6p
Abstrakt: We investigated a wafer level Cu/low-k thickness measurement technique and compared it to the electrical and surface profiling techniques. With this optical technique, we can achieve a comprehensive within-die and within-wafer Cu/low-k thickness monitoring which allows for a more accurate Cu CMP process control in advance Cu/low-k damascene structures.
Databáze: Supplemental Index