Abstract: The invention relates to a device for depositing at least one especially thin layer onto at least one substrate (9). Said device comprises a process chamber (1, 20, 11, 11?, 40, 21), housed in a reactor housing (2) and comprising a movable susceptor (20) which carries the at least one substrate (9). A plurality of gas feed lines (24) run into said process chamber and feed different process gases which comprise coat-forming components. Said process gases can be fed to the process chamber in subsequent process steps, thereby depositing the coat-forming components onto the substrate (9). In order to increase the throughput of said method, the process chamber is provided with a plurality of separate deposition chambers (11, 11?) into which different gas feed lines (24, 24?) run, thereby feeding individual gas compositions. The substrate (9) can be fed to said chambers one after the other by moving the susceptor (20) and depositing different layers or layer components.