Single-crystal – oriented-crystal – and epitaxy growth processes; – Forming from vapor or gaseous state – With decomposition of a precursor
Patent
1997-11-21
2000-04-18
Kunemund, Robert
Single-crystal, oriented-crystal, and epitaxy growth processes;
Forming from vapor or gaseous state
With decomposition of a precursor
117104, 117105, 117929, 423446, 427559, C30B 2904
Patent
active
060510633
ABSTRACT:
A diamond wafer including a substrate and a (100) oriented polycrystalline diamond film grown on the substrate for making surface acoustic wave devices, semiconductor devices or abrasion-resistant discs. The (100) oriented film is produced by changing a hydrocarbon ratio in a material gas halfway from a higher value to a lower value. The wafer is monotonously distorted with a distortion height H satisfying 2 .mu.m.ltoreq..vertline.H.vertline..ltoreq.150 .mu.m. The film is polished to a roughness of less than Rmax50 nm and Ra20 nm.
REFERENCES:
patent: 4836881 (1989-06-01), Satoh et al.
patent: 4863529 (1989-09-01), Imai et al.
patent: 5071785 (1991-12-01), Nakazato et al.
patent: 5240749 (1993-08-01), Chow
patent: 5241140 (1993-08-01), Itoh et al.
patent: 5270028 (1993-12-01), Tanabe et al.
patent: 5270077 (1993-12-01), Knemeyer et al.
patent: 5273731 (1993-12-01), Anthony et al.
patent: 5294381 (1994-03-01), Iguchi et al.
patent: 5587013 (1996-12-01), Ikegaya et al.
patent: 5736226 (1998-04-01), Tanabe et al.
patent: 5776246 (1998-07-01), Tanabe et al.
patent: 5855998 (1999-01-01), Tanabe et al.
patent: 5882809 (1995-01-01), Nishibayashi et al.
Diamond and Related Materials, May 1993, Switzerland, vol. 2, No. 8, ISSN 0925-9635, pp. 1197-1202.
2300 J. of Crystal Growth 128 (1993) Mar. 1, Nos. 1/4, Amsterdam, NL, 413-417.
IEEE 1993 Ultrasonics Symposium Proceedings, Oct.-Nov. 1993.
Tenth International Conference on Crystal Growth, Aug. 1992.
Patent Abstracts of Japan, vol. 017, No. 434 (E-1412), Aug. 11, 1993 & JA-A-05 090888 (Sumitomo Electric Ind. Ltd.) Apr. 9, 1993.
Shikata et al., "High Frequency Bandpass Filter Using Polycrystalline Diamond," Diamond and Related Materials, vol. 2, No. 8, May 15, 1993, pages.
Wolter et al., "Textured Growth of Diamon on Silicon Via in situ Carburization and Bias-Enhanced Nucleation," Applied Phsics Letters, vol. 62, No. 11, Mar. 15, 1993, pp. 1215-1217.
Shikata et al., "1.5GHz Saw Bandpass Filter Using Poly-Crystalline Diamond," IEEE 1993 Ultrasonics Symposium Proceedings, vol. 1, ISBN 0-7803-1278-3, 1993, pp. 277-280.
Wild et al., "Textured Growth and Twinning in Polycrystalline CVD Diamond Films;" Proceedings of the Second International Symposium on Diamond Materials, vol. 91-8 (1991), US, pp. 224-239.
Fujimori Naoji
Ikegaya Akihiko
Nakahata Hideaki
Seki Yuichiro
Shikata Shin-ichi
Kunemund Robert
Sumitomo Electric Industries Ltd.
LandOfFree
Diamond wafer and method of producing a diamond wafer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diamond wafer and method of producing a diamond wafer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diamond wafer and method of producing a diamond wafer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2333449