Fe4 Sb4 S4

semiconductor

· Fe4 Sb4 S4

Fe₄Sb₄S₄ is a quaternary semiconductor compound combining iron, antimony, and sulfur in a mixed-valence framework structure. This is a research-phase material primarily investigated for thermoelectric and photovoltaic applications due to its narrow bandgap and potential for phonon scattering optimization. Industrial adoption remains limited; the material is of interest to researchers exploring novel semiconductor architectures for energy conversion, particularly where tunable electronic properties and layered crystal structures offer advantages over conventional ternary or binary semiconductors.

thermoelectric energy harvestingphotovoltaic absorber layerssolid-state cooling devicessemiconductor researchnarrow-bandgap optoelectronicstemperature-dependent devices

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.02000	eV	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.4260	eV/atom	—

Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

Fe4 Sb4 S4

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control