Methods for manufacturing monocrystalline diamond films
First Claim
1. A method for forming monocrystalline diamond films by chemical vapor deposition (CVD) on substrates which are made of platinum or its alloys and have either (111) or (001) crystal surfaces and/or inclined crystal surfaces with angular deviations within ±
- 10 degrees from (111) or (001), respectively, on the substrate surfaces entirely or at least partly.
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Abstract
A method is related to grow monocrystalline diamond films by chemical vapor deposition on large area at low cost. The substrate materials are either bulk single crystals of Pt or its alloys, or thin films of those materials deposited on suitable supporting materials. The surfaces of those substrates must be either (111) or (001), or must have domain structures consisting of (111) or (001) crystal surfaces. Those surfaces can be inclined within ±10 degree angles from (111) or (001). In order to increase the nucleation density of diamond, the substrate surface can be scratched by buff and/or ultrasonic polishing, or carbon implanted. Monocrystalline diamond films can be grown even though the substrate surfaces have been roughened. Plasma cleaning of substrate surfaces and annealing of Pt or its alloy films are effective in growing high quality monocrystalline diamond films.
44 Citations
30 Claims
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1. A method for forming monocrystalline diamond films by chemical vapor deposition (CVD) on substrates which are made of platinum or its alloys and have either (111) or (001) crystal surfaces and/or inclined crystal surfaces with angular deviations within ±
- 10 degrees from (111) or (001), respectively, on the substrate surfaces entirely or at least partly.
- View Dependent Claims (5, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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2. A method for forming monocrystalline diamond films by CVD on substrates each of which comprises of a film of platinum or its alloys deposited on the entire or at least part of the supporting material surface, where the film has either (111) or (001) crystal surfaces and/or inclined crystal surfaces with angular deviations within ±
- 10 degrees from (111) or (001), respectively.
- View Dependent Claims (3, 4, 6, 7, 8, 9, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
Specification