TITLE

Growth of epitaxial germanium films on silicon using hot-wire chemical vapor deposition

AUTHOR(S)
Mukherjee, C.; Seitz, H.; Schro¨der, B.
PUB. DATE
May 2001
SOURCE
Applied Physics Letters;5/28/2001, Vol. 78 Issue 22, p3457
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the epitaxial growth of germanium (Ge) films from germane gas at low substrate temperature of 350 °C and deposition rates up to 3 Å/s on crystalline silicon (Si) using hot-wire chemical vapor deposition. In situ kinetic ellipsometry measurements reveal that deposition rate is very critical to obtain thick epitaxial films. Cross-sectional transmission electron microscopy and spectroscopic ellipsometry measurements yield growth of epitaxial Ge layer with 98% crystalline fraction. Epitaxy was also confirmed by x-ray diffraction measurements and lattice stress in the epilayer is estimated. Raman measurements also reflect growth of crystalline Ge films without Si impurities. © 2001 American Institute of Physics.
ACCESSION #
4711236

 

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