Method of Manufacturing A Semiconductor Transducer Device With Multilayer Diaphragm And Semiconductor Transducer Device With Multilayer Diaphragm

In an embodiment a method includes providing a semiconductor body, forming a sacrificial layer above a surface of the semiconductor body, applying a diaphragm on the sacrificial layer and removing the sacrificial layer by introducing an etchant into openings of the diaphragm, wherein applying the diaphragm comprises applying a first layer, reducing a roughness of a surface of the first layer facing away from the semiconductor body thereby providing a processed surface, and patterning and structuring the first layer to form the openings.