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Materials and Physical Properties of Novel High-k and Medium-k Gate Dielectrics

Published online by Cambridge University Press:  21 March 2011

Ran Liu ,
Stefan Zollner ,
Peter Fejes ,
Rich Gregory ,
Shifeng Lu ,
Kim Reid ,
David Gilmer ,
Bich-Yen Nguyen ,
Zhiyi Yu  and
Ravi Droopad
Ran Liu
Affiliation:
DigitalDNA Laboratories, Motorola, Mesa, AZ 85202, USA
Stefan Zollner
Affiliation:
DigitalDNA Laboratories, Motorola, Mesa, AZ 85202, USA
Peter Fejes
Affiliation:
DigitalDNA Laboratories, Motorola, Mesa, AZ 85202, USA
Rich Gregory
Affiliation:
DigitalDNA Laboratories, Motorola, Mesa, AZ 85202, USA
Shifeng Lu
Affiliation:
DigitalDNA Laboratories, Motorola, Mesa, AZ 85202, USA
Kim Reid
Affiliation:
DigitalDNA Laboratories, Motorola, Mesa, AZ 85202, USA
David Gilmer
Affiliation:
DigitalDNA Laboratories, Motorola, Mesa, AZ 85202, USA
Bich-Yen Nguyen
Affiliation:
DigitalDNA Laboratories, Motorola, Mesa, AZ 85202, USA
Zhiyi Yu
Affiliation:
Jay Curless, Alex Demkov, Jeff Finder, Kurt Eisenbeiser Physical Science Research Laboratories, Motorola, Tempe, AZ 85202, USA
Ravi Droopad
Affiliation:
Jay Curless, Alex Demkov, Jeff Finder, Kurt Eisenbeiser Physical Science Research Laboratories, Motorola, Tempe, AZ 85202, USA
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Abstract

Rapid shrinking in device dimensions calls for replacement of SiO2 by new gate insulators in future generations of MOSFETs. Among many desirable properties, potential candidates must have a higher dielectric constant, low leakage current, and thermal stability against reaction or diffusion to ensure sharp interfaces with both the substrate Si and the gate metal (or poly-Si). Extensive characterization of such materials in thin-film form is crucial not only for selection of the alternative gate dielectrics and processes, but also for development of appropriate metrology of the high-k films on Si. This paper will report recent results on structural and compositional properties of thin film SrTiO3 and transition metal oxides (ZrO2and HfO2).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 670: Symposium K – Gate Stack and Sillicide Issues in Silicon , 2001 , K1.1
Copyright
Copyright © Materials Research Society 2001

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References

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