AgFeSe2

AgFeSe₂ is a ternary chalcogenide semiconductor compound combining silver, iron, and selenium in a layered or complex crystal structure. This material belongs to the class of multinary semiconductors currently under investigation in research for optoelectronic and photovoltaic applications, where the combination of elements offers tunable bandgap and potential for efficient light absorption across multiple wavelengths. While not yet widely commercialized, AgFeSe₂ and related ternary selenides represent an alternative to binary semiconductors like CdSe or CdTe for solar cells and photodetectors, with the advantage of using less toxic or more abundant elements depending on synthesis route.