Patent ID: 8022012

Claim:
A method of forming a thin film on at least one substrate using multiple reactants comprising: loading the at least one substrate onto a rotatable platen, the rotatable platen being partially enclosed by a heater configured to have a pressurized reaction zone enclosing a portion of the platen and a depressurized open section configured to provide direct access to the at least one substrate; rotating the platen; depositing a first reactant onto a surface of the at least one substrate in the depressurized open section; and heating a second reactant in solid form contained within an evaporation cell disposed in the heater and operatively coupled to the pressurized reaction zone so as to produce a pressurized gaseous phase inside the pressurized reaction zone, the reaction zone containing negligible amounts of oxygen, the second reactant reacting with the first reactant in a self-limiting reaction to form a thin film on the at least one substrate.