Invention Application
US20140367751A1 FINFET SPACER ETCH FOR eSiGe IMPROVEMENT 有权
用于电子改进的FINFET间隔器

FINFET SPACER ETCH FOR eSiGe IMPROVEMENT
Abstract:
A method for etching FinFET spacers by inserting a Si recess step directly after the traditional spacer ME step and the resulting device are provided. Embodiments include forming a gate on a substrate having a silicon fin, the gate having a nitride cap on an upper surface thereof and an oxide cap on an upper surface of the nitride cap; forming a dielectric layer over the silicon fin and the gate; removing the dielectric layer from an upper surface of the oxide cap and an upper surface of the silicon fin; recessing the silicon fin; and removing the dielectric layer from side surfaces of the silicon fin and the remaining silicon fin.
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