Ag4 S2

semiconductor

· Ag4 S2

Ag₄S₂ is a silver sulfide compound semiconductor belonging to the chalcogenide family, characterized by mixed-valence silver cations and sulfide anions in its crystal structure. This material is primarily investigated in research contexts for photovoltaic and optoelectronic applications due to its narrow bandgap and ionic-electronic conductivity; it represents a niche material compared to more established semiconductors like silicon or cadmium telluride, with potential relevance in thin-film solar cells, photodetectors, and emerging solid-state ionics where silver ion mobility is exploited.

thin-film photovoltaicsphotodetectorssolid-state ionic conductorsoptoelectronic researchsilver-based semiconductorsmaterials research and development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	45.22	GPa	—
Shear Modulus(G)	10.21	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.101	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.07400	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.

Ag4 S2

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control