Patent ID: 8338276
Filing Date: 2012-12-25
Classification: B82Y,C23C,H01L

Abstract:
1. A method of manufacturing a structure comprising semi-conductor material nanocrystals on a dielectric material substrate by chemical vapour deposition (CVD), said method comprising: i) contacting a surface of a dielectric layer present on a substrate with a first gaseous precursor, by CVD, to form nanocrystal nuclei on said surface of said dielectric layer; ii) contacting said nanocrystal nuclei with a second gaseous precursor, by CVD, to selectively deposit nanocrystal semi-conductor material only on said nuclei and to thereby grow nanocrystals on said nuclei, each nanocrystal having an exposed surface; and iii) forming a nitride layer only on said exposed surface of each nanocrystal by contacting said nanocrystals with a mixture comprising the second gaseous precursor and a third gaseous precursor to terminate the growth of said nanocrystals and to selectively and stoichiometrically deposit said nitride layer on said exposed surface, wherein a material of said nanocrystal nuclei is compatible with a material of said dielectric layer, each of said i), ii) and iii) are carried out in a same chamber, and the first gaseous precursor, the second gaseous precursor and the mixture of the second gaseous precursor with the third gaseous precursor are introduced into the chamber in a continuous flow.