Editorial: focus on waste-heat harvesting via thermoelectric conversion: materials, devices and systems for sustainable energy technologies

The focus collection 'Waste-heat harvesting via thermoelectric conversion: Materials, devices and systems for sustainable energy technologies' collates several research articles and a Roadmap highlighting the most recent advances in the field of thermoelectricity from the viewpoint of both basic and applied research, with a special eye on the work of the Italian community.