Provided is a semiconductor device that includes: at least one field-effect transistor and at least one PN junction device at a lateral side of the at least one field-effect transistor in a 1st layer; and at least one back side power delivery network (BSPDN) structure in a 2nd layer below the 1st layer, wherein the at least one BSPDN structure is configured to connect the at least one field-effect transistor to a voltage source.