Tl1 Fe1 Se2

TlFeSe₂ is a ternary chalcogenide semiconductor compound combining thallium, iron, and selenium. This material belongs to the family of layered metal chalcogenides and is primarily investigated in research contexts for its electronic and optical properties, rather than established industrial production. It represents a promising candidate for emerging applications in thermoelectric devices, photovoltaic systems, and topological materials research, where the interplay between heavy elements and transition metals can produce unusual electronic band structures and potentially useful functional properties.