High performance metal gate MOSFETs fabricated by CMP for 0.1 μm regime

A. Yagishita, Tomohiro Saito, K. Nakajima, Seiji Inumiya, Y. Akasaka, Yoshio Ozawa, G. Minamihaba, Hiroyuki Yano, K. Hieda, K. Suguro,

2002 · 34 citations · 2 references

Concepts

Abstract

We propose a plasma and thermal damage-free gate process named the "Damascene gate process" where CMP (Chemical Mechanical Polishing) is used in forming the gate structure. By using this process, fully planarized high performance metal (W/TiN or Al/TiN) gate transistors with pure SiO/sub 2/ or Ta/sub 2/O/sub 5/ as gate insulators were fabricated with very uniform and highly reliable electrical characteristics. Therefore, this technology is useful in fabricating 0.1 /spl mu/m MOSFETs and beyond.

References

2