Patent ID: 6274007
Filing Date: 2001-08-14
Classification: B82Y,H01L

Abstract:
A method of forming a silicon nanostructure, comprising:sputtering a silicon surface having a predetermined temperature by a uniform flow of nitrogen molecular ions having a predetermined ion energy, a predetermined ion incidence angle, and a predetermined ion penetration range, in an ultra-high vacuum so as to form a periodic wave-ordered-structure having a formation depth and a height and defining a wave front of said periodic wave-ordered-structure in the direction of an ion incidence plane defined by said flow of nitrogen molecular ions; further including the following steps:prior to sputtering:(a) selecting a desired wavelength of the periodic wave-ordered-structure in the range 9 nm to 120 nm; and(b) determining the ion energy, the ion incidence angle to said silicon surface, the temperature of said silicon, the formation depth of said wave-ordered-structure, the height of said wave-ordered-structure and the ion penetration range into silicon, all on the basis of said selected wavelength.