Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering
Patent
1995-06-06
1998-12-15
Nguyen, Nam
Chemistry: electrical and wave energy
Processes and products
Coating, forming or etching by sputtering
20419215, 2041923, C23K 1434
Patent
active
058491635
ABSTRACT:
A process for forming an epitaxial film on a biased substrate by sputtering a target to which a bias voltage and a plasma-generating high-frequency power are applied, wherein the film formation is carried out in an atmosphere having H.sub.2 O, CO and CO.sub.2 partial pressures controlled at 1.0.times.10.sup.-8 Torr, with the substrate temperature maintained in the range of from 400.degree. to 700.degree. C. The epitaxial film obtained by the process has excellent interface characteristics, very low impurity contents, good crystallinity and excellent step coverage, and is suitable for application to semiconductor devices.
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Ichikawa Takeshi
Mizutani Hidemasa
Canon Kabushiki Kaisha
Nguyen Nam
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