Fe3 Se4

Fe₃Se₄ is an iron selenide semiconductor compound belonging to the chalcogenide material family, characterized by iron and selenium in a defined stoichiometric ratio. This material is primarily of research interest for thermoelectric and optoelectronic applications, where its semiconductor bandgap and layered crystal structure offer potential for energy conversion and light-sensing devices; it remains an experimental compound rather than an established industrial material, but iron selenides as a class are being investigated as alternatives to traditional semiconductors due to their earth-abundant constituents and tunable electronic properties.