Patent ID: 8225744

Claim:
An apparatus for depositing a solid film onto a substrate from reagent solutions comprising: a reservoir of a first reagent solution maintained at a first temperature at which homogeneous reactions are substantially inhibited within said first reagent solution; a first showerhead assembly including a nebulizer configured to dispense said first reagent solution as a fine mist at said first temperature; a reservoir of a second reagent solution maintained at a second temperature at which homogeneous reactions are substantially inhibited within said second reagent solution; a second showerhead assembly configured to dispense said second reagent solution as a flowing stream at said second temperature; a substrate holder configured to hold said substrate in a position to receive, in sequence, at least a portion of said fine mist of said first reagent solution and at least a portion of said flowing stream of said second reagent over a selected area of said substrate, said substrate holder further including a raised structure peripheral to said selected area whereby a controlled volume of said second reagent solution may be maintained upon said substrate and replenished at a selected rate; and, a heater disposed beneath said substrate, said heater configured to maintain said substrate at a selected temperature, higher than at least one of said first and second temperatures, at which the deposition of a desired solid phase from said first and said second reagent solutions respectively may be initiated.