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Molecular Beam Epitaxy study of a common a-GeO2 interfacial passivation layer for Ge- and GaAs-based MOS heterostructures

Published online by Cambridge University Press:  31 January 2011

Clement Merckling ,
Julien Penaud ,
Florence Bellenger ,
David Kohen ,
Geoffrey Pourtois ,
Guy Brammertz ,
Marco Scarrozza ,
Mario El Kazzi ,
Michel Houssa  and
Johan Dekoster
...Show all authors
Clement Merckling
Affiliation:
clement.merckling@imec.be, IMEC, Leuven, Belgium
Julien Penaud
Affiliation:
julien.penaud@imec.be, Riber, Bezons, France
Florence Bellenger
Affiliation:
Florence.Bellenger@imec.be, IMEC, Leuven, Belgium
David Kohen
Affiliation:
David.Kohen@imec.be, IMEC, Leuven, Belgium
Geoffrey Pourtois
Affiliation:
Geoffrey.Pourtois@imec.be, IMEC, Leuven, Belgium
Guy Brammertz
Affiliation:
Guy.Brammertz@imec.be, IMEC, Leuven, Belgium
Marco Scarrozza
Affiliation:
Marco.Scarrozza@imec.be, IMEC, Leuven, Belgium
Mario El Kazzi
Affiliation:
mario.elkazzi@synchrotron-soleil.fr, Societé Civile Synchrotron Soleil, Gif-sur-Yvette, France
Michel Houssa
Affiliation:
michel.houssa@fys.kuleuven.be, KU Leuven, Leuven, Belgium
Johan Dekoster
Affiliation:
Johan.Dekoster@imec.be, IMEC, Leuven, Belgium
Matty Caymax
Affiliation:
Matty.Caymax@imec.be, IMEC, Leuven, Belgium
Marc Meuris
Affiliation:
Marc.Meuris@imec.be, IMEC, Leuven, Belgium
Marc Heyns
Affiliation:
Marc.Heyns@imec.be, IMEC, Leuven, Belgium
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Abstract

Future CMOS technologies will require the use of substrate material with a very high mobility. Therefore, the combination of Ge pMOS with GaAs nMOS devices is investigated for its possible use in advanced CMOS applications. In this work, the physical, chemical and electrical properties of a-GeO2 interfacial passivation layer (IPL) for n-Ge(001) and p-GaAs(001) have been investigated, using Molecular Beam Epitaxy (MBE) technique. The efficient electrical passivation of Ge/GeO2 will be demonstrated, and in the case of GaAs, the use of a thin a-GeO2 interlayer reduces the defects at the interface.

Keywords

passivationmolecular beam epitaxy (MBE)III-V

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