TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The component is rotated by movement of the second liquid during the coating in a motion such that the first fluid is set in motion by the movement of the component. A sheet-like member is used as a component, where a ratio of a side length to a component thickness is greater than 100, preferably greater than 1000. is A layer of semiconductor material and/or a layer of pure metal is deposited on the first component surface from the first liquid, preferably a layer of copper, indium and/or gallium, a layer of sulfides and/or oxysulfides, preferably sulfides, and/or oxysulfides of cadmium, zinc and/or indium. A substrate of a thin-film solar cell is used as component.    TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: A container is provided as part of the device, where the second fluid is present in the container and the container is sealed with the second component surface to form a volume for the second fluid. An additional container is provided as part of the device, where the first liquid is in the additional container. The additional container and the container, in which the second liquid is located, are arranged such that the component can be accommodated between the additional container and the container. The device comprises a frame, where the container in which the second liquid is located and the frame are arranged such that the component can be accommodated between the container and the frame. The frame with the second component surface has a receptacle for the second liquid, where the second liquid is located in the receptacle. An apparatus is provided for moving the second liquid, preferably an ultrasonic vibrator, a displacement piston and/or a pump with a valve circuit and equalization tank. The ultrasonic vibrator is arranged in the container such that the ultrasonic vibrator is in contact with the second liquid. The ultrasonic vibrator transmits motion directly to the container. The first fluid is designed to deposit a material layer on the first component surface.