Patent ID: 7972899

Claim:
A method for depositing a solid film onto a substrate from a reagent solution comprising the steps of: providing a supply of a first reagent solution maintained at a first temperature at which homogeneous reactions are substantially inhibited within said first reagent solution; dispensing a fine mist of said first reagent solution from a first showerhead assembly; positioning said substrate to receive at least a portion of said fine mist of said first reagent over a selected area of said substrate; providing a supply of a second reagent solution maintained at a second temperature at which homogeneous reactions are substantially inhibited within said second reagent solution; dispensing a flowing stream of said second reagent solution from a second showerhead assembly; positioning said substrate to receive at least a portion of said flowing stream of said second reagent over a selected area of said substrate; providing a raised structure peripheral to said selected area whereby a controlled volume of said second reagent solution may be maintained upon said substrate; and, heating said substrate and said controlled volume of said second reagent solution upon said substrate to a selected temperature, higher than at least one of said first and said second temperatures, so that deposition of a desired solid phase from said reagent solutions may be initiated.