Ca2 Fe4 S8

semiconductor

· Ca2 Fe4 S8

Ca₂Fe₄S₈ is a mixed-valence iron sulfide compound with calcium, belonging to the family of thiospinel and related sulfide semiconductors. This material is primarily of research interest rather than established commercial use, with potential applications in photovoltaics, thermoelectrics, and energy storage devices where earth-abundant, non-toxic semiconductors are valued. Engineers and researchers explore such iron-calcium sulfides as alternatives to toxic or scarce semiconductor materials, particularly for optoelectronic and solid-state energy conversion devices.

Photovoltaic absorbers (research)Thermoelectric devicesElectrochemical energy storageEarth-abundant semiconductorsMaterials screening (experimental)Solid-state electronics (developmental)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.8038	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.7460	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.

Ca2 Fe4 S8

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control