Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1985-11-14
1987-10-13
Childs, Sadie L.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
427 94, 427255, 4272552, 428446, 437241, B32B 904, C23C 1634
Patent
active
046998250
ABSTRACT:
In forming a silicon nitride film by the low-pressure CVD method using a silane gas and ammonia, the reaction pressure is set to lie over a range of from about 0.05 to about 0.25 Torr, enabling a silicon nitride film to be formed, of uniform thickness, highly efficiently even on large wafers, and maintaining high yield, improved uniformity and good quality as a whole without decreasing the film-forming efficiency. Preferably, the reaction pressure is maintained over a range of from 0.1 to 0.2 Torr to further increase the efficiency, while preferably maintaining the temperature over a range of from 700.degree. to 1000.degree. C.
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Olcaytug et al, "A Low Temperature Process for the Reactive Formation of Si.sub.3 N.sub.4 Layers on InSb", Thin Solid Films, vol. 67, pp. 321-324, 1980.
Mizutani Tetsuya
Sakai Hideo
Yoshimi Takeo
Childs Sadie L.
Hitachi , Ltd.
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