Cu4 Ag4 S4

semiconductor

· Cu4 Ag4 S4

Cu4Ag4S4 is a quaternary semiconductor compound combining copper, silver, and sulfur in a stoichiometric ratio, belonging to the family of mixed-metal chalcogenides. This material is primarily of research interest for potential applications in thermoelectric devices, photovoltaic systems, and solid-state electronics where the combination of two coinage metals with sulfur offers tunable electronic and thermal properties. The dual-metal composition distinguishes it from single-metal sulfide semiconductors, potentially enabling enhanced performance through synergistic alloying effects, though industrial adoption remains limited and practical applications are still under investigation.

thermoelectric energy conversionphotovoltaic researchsemiconductor device developmentsolid-state electronicsexperimental chalcogenide materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	50.62	GPa	—
Shear Modulus(G)	17.49	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.6613	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.1370	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.

Cu4 Ag4 S4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control