Patent ID: 7793611

Claim:
An apparatus for depositing a solid film onto a substrate from an aqueous reagent solution comprising: a reservoir of said aqueous reagent solution maintained at a first temperature at which homogeneous reactions are substantially inhibited within said reagent solution, said reagent solution further containing at least two ligands; a fluid dispenser configured to dispense a controlled, intermittent flow of said reagent solution at said first temperature; a substrate holder configured to hold said substrate in a position to receive at least a portion of said controlled flow of said 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 reagent solution may be maintained upon said substrate and periodically replenished at a selected rate; and, a heater disposed beneath said substrate, said heater configured to maintain said substrate at a second temperature, higher than said first temperature, at which the deposition of a desired solid phase from said reagent solution may be initiated.