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Particle-Assisted Oriented Deposition of Diamond Thin Films

Published online by Cambridge University Press:  15 February 2011

Dong-Gu Lee
Affiliation:
University of Florida, Department of Materials Science and Engineering, Gainesville, FL 32611
Rajiv K. Singh
Affiliation:
University of Florida, Department of Materials Science and Engineering, Gainesville, FL 32611
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Abstract

We have developed a method for <111> oriented diamond film synthesis using micron-sized diamond particles. Different size of diamond powders were electrophoretically seeded on silicon substrates using diamond suspensions in organic solvents (acetone, methanol, and ethanol). Diamond suspension in acetone was found to be the best for obtaining uniform diamond seeding by electrophoresis. The thickness of diamond seeded films was changed by varying the applied voltage to observe the effect on the orientation of diamond particles. Then diamond films were deposited by the hot filament chemical vapor deposition (HFCVD) process. A preferred orientation with <111> direction normal to the substrate was obtained for monolayer coatings. The surface morphology, crystal orientation, and quality of diamond films were investigated using scanning electron microscopy, x-ray diffractometry, and Raman spectroscopy.

Type
Research Article
Copyright
Copyright © Materials Research Society 1996

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