Patent ID: 7696097
Filing Date: 2010-04-13
Classification: B82Y,H01L,Y10S

Abstract:
1. A method for the site-selective growth of horizontal nanowires, comprising: forming a first silicon oxide thin film on a silicon substrate (first step); sequentially removing portions of the first silicon oxide thin film and portions of the silicon substrate by etching to form two or more elongated grooves having a predetermined width and length (second step); removing the first silicon oxide thin film remaining on the silicon substrate (third step); oxidizing the surface of the silicon substrate having the elongated grooves to form a second silicon oxide thin film, the three wall surfaces between the respective grooves being oxidized to leave silicon cores surrounded by the second silicon oxide thin film (fourth step); vertically etching and removing portions of both ends of the silicon cores surrounded by the second silicon oxide thin film by patterning (fifth step); dissolving the silicon cores within the second silicon oxide thin film to form hollow channels whose both ends are opened (sixth, step); depositing catalytic metal layers to cover the open ends positioned at one side of the hollow channels (seventh step); forming a protective film, on the upper surfaces of the catalytic metal layers to inhibit vertical growth of nanowires from the catalytic metal layers (eighth step); and growing nanowires from the catalytic metal layers within the hollow channels in a direction parallel to the silicon substrate (ninth step).