Patent ID: 7833352

Claim:
An apparatus for growing thin films onto a substrate by exposing the substrate to alternate surface reactions of vapor-phase reactants for forming a thin film onto the substrate by means of said surface reactions, the apparatus comprising: a reaction chamber that includes internal surfaces that define a reaction space into which said substrate can be transferred; inlet channels connected to said reaction chamber for feeding therein said reactants used in said thin film growth process, said inlet channels being separated from each other until opening into said reaction chamber; and outlet channels connected to said reaction chamber for discharging gaseous reaction products and excess reactants, wherein said reaction chamber comprises at least two parts, at least one part being movable with respect to the remaining part(s) of the reaction chamber and adapted to be sealably closable against said remaining part of said reaction chamber; and further comprising controls configured to deliver at least two reactants through the inlet channels to the reaction space in alternate pulses.