High thermoelectric performance in low-cost SnS0.91Se0.09 crystals
(PHYSorg.com Chemistry)

Thermoelectric materials technology can convert between heat and electricity within a materials construct, but many existing materials contain rare or toxic elements. In a new study on Science, Wenke He and colleagues reported the temperature dependent interplay between three separate electronic bands in hole-doped tin sulfide (SnS) crystals. The materials behaviour allowed synergistic optimization between effective mass (m*) and carrier mobility (µ), which the research team boosted by introducing selenium (Se).