Threading-dislocation-free nanoheteroepitaxy of Ge on Si...

Semiconductor device manufacturing: process – Formation of semiconductive active region on any substrate – On insulating substrate or layer

Reexamination Certificate

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C117S088000

Reexamination Certificate

active

07579263

ABSTRACT:
A method of forming a virtually defect free lattice mismatched nanoheteroepitaxial layer is disclosed. The method includes forming an interface layer on a portion of a substrate. A plurality of seed pads are then formed by self-directed touchdown by exposing the interface layer to a material comprising a semiconductor material. The plurality of seed pads, having an average width of about 1 nm to 10 nm, are interspersed within the interface layer and contact the substrate. An epitaxial layer is then formed by lateral growth of the seed pads over the interface layer.

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