Low temperature deposition method for high quality aluminum oxid

Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge

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427 39, B05D 306

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active

046750894

ABSTRACT:
A high quality Al.sub.2 O.sub.3 film is deposited by means of plasma enhanced chemical vapor deposition by passing a trialkylaluminum vapor over the surface of a substrate and CO.sub.2 gas as the oxidant in a plasma above the substrate surface. The CO.sub.2 is controlled to prevent particle formation due to gas phase reaction in the plasma as opposed to directly on the substrate surface.

REFERENCES:
Preparation and Properties of Aluminum Oxide Films Obtained by Glow Discharge Technique, H. Katto et al., J. Electrochem. Soc., 118, (10), 1619-1623 (1971).
Electrical Properties of Al.sub.2 O.sub.3 and AlP.sub.x O.sub.y Dielectric Layers on InP, L. G. Meiners, Thin Solid Films, 113, 85-92 (1984).
Plasma Enhanced Metal-Organic Chemical Vapor Deposition of Aluminum Oxide Dielectric Film for Device Applications, K. P. Pande et al., J. Appl. Phys., 54, (9), 5436-5440, (1983).

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