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Compact and Efficient HFCVD for Electronic Grade Diamond and Related Materials

Published online by Cambridge University Press:  31 January 2011

R. Vispute,
Andrew Seiser,
Geun Lee,
Jaurette Dozier,
Jeremy Feldman,
Lance Robinson,
Bradley Zayac and
Alden Grobicki
R. Vispute
Affiliation:
rd@bluewavesemi.com, United States
Andrew Seiser
Affiliation:
andrew@bluewavesemi.com, Blue Wave Semiconductors, Inc., 21227, Maryland, United States
Geun Lee
Affiliation:
geun@bluewavesemi.com, Blue Wave Semiconductors, Inc., 21227, Maryland, United States
Jaurette Dozier
Affiliation:
jd@bluewavesemi.com, Blue Wave Semiconductors, Inc., 21227, Maryland, United States
Jeremy Feldman
Affiliation:
jeremy@bluewavesemi.com, Blue Wave Semiconductors, Inc., 21227, Maryland, United States
Lance Robinson
Affiliation:
lane@bluewavesemi.com, Blue Wave Semiconductors, Inc., 21227, Maryland, United States
Bradley Zayac
Affiliation:
bradleyzayac@gmail.com, Blue Wave Semiconductors, Inc., 21227, Maryland, United States
Alden Grobicki
Affiliation:
aldengrobicki@gmail.com, Blue Wave Semiconductors, Inc., 21227, Maryland, United States
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Abstract

A compact and efficient hot filament chemical vapor deposition system has been designed for growing electronic-grade diamond and related materials. We report here the effect of substrate rotation on quality and uniformity of HFCVD diamond films on 2” wafers, using two to three filaments with power ranging from 500 to 600 Watt. Diamond films have been characterized using x-ray diffraction, Raman Spectroscopy, scanning electron microscopy and atomic force microscopy. Our results indicate that substrate rotation not only yields uniform films across the wafer, but crystallites grow larger than without sample rotation. Well-faceted microcrystals are observed for wafers rotated at 10 rpm. We also find that the Raman spectrum taken from various locations indicate no compositional variation in the diamond film and no significant Raman shift associated with intrinsic stresses. Results are discussed in the context of growth uniformity of diamond film to improve deposition efficiency for wafer-based electronic applications.

Keywords

chemical vapor deposition (CVD) (deposition)diamondthin film

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