Method for fabricating semiconductor device
First Claim
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1. A method for fabricating a semiconductor device comprising the steps of:
- (1) depositing an insulating film on a substrate;
(2) depositing a silicon layer on the insulating film;
(3) depositing an amorphous metal nitride film on the silicon layer; and
,(4) heat treating the amorphous metal nitride film to alter into a crystalline pure metal film.
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Abstract
Method for fabricating a semiconductor device, is disclosed, in which a grain size is made coarse for forming a thin film with a low resistance, including the steps of (1) depositing an insulating film on a substrate, (2) depositing a silicon layer on the insulating film, (3) depositing an amorphous metal nitride film on the silicon layer, and (4) heat treating the amorphous metal nitride film to alter into a crystalline pure metal film.
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19 Claims
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1. A method for fabricating a semiconductor device comprising the steps of:
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(1) depositing an insulating film on a substrate; (2) depositing a silicon layer on the insulating film; (3) depositing an amorphous metal nitride film on the silicon layer; and
,(4) heat treating the amorphous metal nitride film to alter into a crystalline pure metal film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for fabricating a semiconductor device comprising the steps of:
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(1) forming an insulating film on a semiconductor substrate; (2) forming a silicon layer on the insulating film; (3) depositing a first amorphous metal nitride film and a second amorphous metal nitride film in succession on the silicon layer; (4) injecting impurity ions to break a lattice of the second metal nitride film; and
,(5) heat treating the second metal nitride film having a lattice broken to alter into a crystalline pure metal film. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification