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Antimony on Diamond: A Comparison to Sb/Si and Sb/Ge

Published online by Cambridge University Press:  25 February 2011

J. Wu ,
M. Richter ,
R. Cao ,
J. Terry ,
P. Pianetita  and
I. Lindau
J. Wu
Affiliation:
Stanford Synchrotron Radiation Laboratory, Stanford, CA 94309-0210
M. Richter
Affiliation:
Stanford Synchrotron Radiation Laboratory, Stanford, CA 94309-0210
R. Cao
Affiliation:
Stanford Synchrotron Radiation Laboratory, Stanford, CA 94309-0210
J. Terry
Affiliation:
Stanford Synchrotron Radiation Laboratory, Stanford, CA 94309-0210
P. Pianetita
Affiliation:
Stanford Synchrotron Radiation Laboratory, Stanford, CA 94309-0210
I. Lindau
Affiliation:
Stanford Synchrotron Radiation Laboratory, Stanford, CA 94309-0210
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Abstract

Diamond is an important semiconductor which has great potential in high temperature, high power device applications. In the fabrication process of diamond electronic device, doping ofdiamond and understanding of diamond/metal interfaces are important. As a Column V element, Sb is a possible dopant for diamond. Early work reported that Sb is incorporated into diamond by ion implantaion [1]. In addition, Sb plays an important role in Si and Ge heteroepitaxial growth. On the Si or Ge surface one ordered monolayer of Sb occupies the epitaxial sites and saturates the surface dangling bonds, which leads to uniform epitaxial growth. While diamond has the same crystal structure as both silicon and germanium, it has a drastically smaller lattice and much stronger bond. This makes it very difficult to extrapolate antimony's behavior on diamond from its behavior on either silicon or germanium. In this work, we have studied the electronic and geometric structure of Sb on diamond surfaces using photoelectron spectroscopy and low energy electron diffraction. While the exact adsorption sites could not be determined, we find that antimony strongly bonds to the diamond surface. Further, antimony behaves very differently on the diamond(100) face as compared to the diamond(111) face. We also find that neither Sb/diamond system behaves like antimony on either silicon or germanium. We attribute these results to the drastically smaller diamond lattice and the stronger C-C bond.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 270: Symposium M – Novel Forms of Carbon , 1992 , 407
Copyright
Copyright © Materials Research Society 1992

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References

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