Semiconductor device and the manufacturing method thereof
First Claim
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1. A method of manufacturing a semiconductor device, comprising:
- providing a sacrifice film having a thickness greater than or equal to 10 nm and less than or equal to 100 nm on a semiconductor substrate;
providing a resist film having an opening on said sacrifice film; and
providing an impurity doped region by performing an ion implantation through said sacrifice film from a direction substantially perpendicular to said semiconductor substrate with using said opening in said resist film as a mask.
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Abstract
A manufacturing method that prevents an enhanced diffusion while preventing channeling from occurring, and forms a local channel having a steep impurity concentration distribution with precise positioning. After forming a sacrifice film on the surface of a silicon substrate, ion implantation is performed from a perpendicular direction through a resist film mask to form a local channel. The thickness of the sacrifice film is greater than or equal to 10 nm and less than or equal to 100 nm. Indium is used as an ion species of the ion implantation.
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Citations
24 Claims
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1. A method of manufacturing a semiconductor device, comprising:
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providing a sacrifice film having a thickness greater than or equal to 10 nm and less than or equal to 100 nm on a semiconductor substrate;
providing a resist film having an opening on said sacrifice film; and
providing an impurity doped region by performing an ion implantation through said sacrifice film from a direction substantially perpendicular to said semiconductor substrate with using said opening in said resist film as a mask. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of manufacturing a semiconductor device, comprising:
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providing a sacrifice film on a semiconductor substrate;
providing a resist film having an opening on said sacrifice film; and
providing an impurity doped region by performing an ion implantation through said sacrifice film from a direction substantially perpendicular to the semiconductor substrate with using said opening in said resist film as a mask, under a condition of d≧
0.035V+4.75, where d (nm) is a thickness of said sacrifice film and V (keV) is an implant energy upon said ion implantation. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification