Patent ID: 7258745
Filing Date: 2007-08-21
Classification: B05D,B82Y,C23C,H01L,Y10S

Abstract:
1. A method for fabricating hafnia film comprising the steps of: a) providing a substrate having a surface that allows formation of a self-assembled monolayer thereon via covalent bonding; b) providing an aqueous solution that provides homogeneous hafnium ionic complexes and hafnium nanoclusters wherein said aqueous solution capable of undergoing homogeneous precipitation under controlled conditions for a desired period of time at a controlled temperature and controlled solution acidity for desired nanocluster nucleation and growth kinetics, desired nanocluster size, desired growth rate of film thickness and desired film surface characteristics; c) forming said self-assembled monolayer on said surface of said substrate wherein said self-assembled monolayer comprises a plurality of hydrocarbon chains cross-linked together along said surface of said substrate, said hydrocarbon chains being uniformly spaced from one another and wherein each of said hydrocarbon chains having a functional anchoring group at a first end of said hydrocarbon chain covalently bonded with said surface of said substrate and each of said hydrocarbon chains having a functional terminating group projected away from said surface of said substrate wherein said functional terminating group provides a bonding site for said hafnium film to grow; and d) exposing said substrate having said self-assembled monolayer on said surface to said aqueous solution for a desired period of time at a controlled temperature wherein said hafnium ionic complexes and said hafnium nanoclusters are deposited on said bonding site of said functional terminating group of said self-assembled monolayer under controlled conditions for a desired period of time thereby forming said hafnia film wherein the hafnium bonded to said hydrocarbons and to one another provide a uniform ordered arrangement defined by the uniform arrangement of said hydrocarbons.