Various aspects relate to a functional layer and the formation thereof. A method for manufacturing a functional layer of an electronic device may include: forming a plurality of sublayers of the functional layer by a plurality of consecutive sublayer processes, each sublayer process of the plurality of consecutive sublayer processes comprising: forming a sublayer of the plurality of sublayers by vapor deposition, the sublayer comprising one or more materials, and, subsequently, crystallizing the one or more materials comprised in the sublayer.