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Homoepitaxial (111) diamond grown by temperature-controlled chemical vapor deposition

Published online by Cambridge University Press:  31 January 2011

Mikka Nishitani-Gamo ,
Isao Sakaguchi ,
Tomohide Takami ,
Katsunori Suzuki ,
Isao Kusunoki  and
Toshihiro Ando
Mikka Nishitani-Gamo
Affiliation:
Core Research for Evolutional Science and Technology (CREST) of Japan Science and Technology Corporation (JST), c/o National Institute for Research in Inorganic Materials (NIRIM), 1–1 Namiki, Tsukuba, Ibaraki 305–0044, Japan
Isao Sakaguchi
Affiliation:
Core Research for Evolutional Science and Technology (CREST) of Japan Science and Technology Corporation (JST), c/o National Institute for Research in Inorganic Materials (NIRIM), 1–1 Namiki, Tsukuba, Ibaraki 305–0044, Japan
Tomohide Takami
Affiliation:
Core Research for Evolutional Science and Technology (CREST) of Japan Science and Technology Corporation (JST) and Research Institute for Scientific Measurements (RISM), Tohoku University, 2–1-1 Katahira, Sendai 980–8577, Japan
Katsunori Suzuki
Affiliation:
Core Research for Evolutional Science and Technology (CREST) of Japan Science and Technology Corporation (JST) and Research Institute for Scientific Measurements (RISM), Tohoku University, 2–1-1 Katahira, Sendai 980–8577, Japan
Isao Kusunoki
Affiliation:
Core Research for Evolutional Science and Technology (CREST) of Japan Science and Technology Corporation (JST) and Research Institute for Scientific Measurements (RISM), Tohoku University, 2–1-1 Katahira, Sendai 980–8577, Japan
Toshihiro Ando
Affiliation:
Core Research for Evolutional Science and Technology (CREST) of Japan Science and Technology Corporation (JST), c/o NIRIM, 1–1 Namiki, Tsukuba, Ibaraki 305–0044, Japan
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Abstract

We investigated the growth of high-quality homoepitaxial diamond on the (111) face in a microwave-assisted plasma chemical-vapor-deposition system incorporating an individual substrate heating/cooling device. The grown diamond films were characterized by scanning electron microscopy, reflection high-energy electron diffraction, atomic force microscopy, confocal micro-Raman spectroscopy, and secondary ion mass spectrometry. The (111) diamond films show a tendency to incorporate a significant amount of hydrogen during chemical-vapor-deposition growth. Hydrogen incorporation degrades the crystal quality and surface smoothness. The amount of incorporated hydrogen decreases with the decrease in deposition temperature. We have shown that the crystal quality and surface smoothness of homoepitaxial diamond strongly depend on the substrate temperature. Independent control of the substrate temperature and incident microwave power is essential for high-quality diamond homoepitaxy.

Type
Articles
Information
Journal of Materials Research , Volume 14 , Issue 9 , September 1999 , pp. 3518 - 3524
Copyright
Copyright © Materials Research Society 1999

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References

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