Semiconductor devices having a semiconductor die electrically coupled to a redistribution structure and a molded material over the redistribution structure are disclosed herein, along with associated systems and methods. In one embodiment, a semiconductor device includes a semiconductor die attached to a first side of a substrate-free redistribution structure, and a plurality of conductive columns extending through a molded material disposed on the first side of the redistribution structure. The semiconductor device can also include a second redistribution structure on the molded material and electrically coupled to the conductive columns. A semiconductor device can be manufactured using a single carrier and requiring processing on only a single side of the semiconductor device.