Cu5Si2S7

metal

· JVASP-98508· Cu5Si2S7

Cu5Si2S7 is a quaternary copper-silicon sulfide compound that belongs to the family of metal chalcogenides—materials combining metals with sulfur and other chalcogens. This is a research-phase material rather than a commercial engineering alloy; compounds in this family are primarily investigated for semiconductor, thermoelectric, and photovoltaic applications where the combination of metallic and chalcogenic properties enables band-gap tuning and charge-carrier control. Copper silicosulfides are notable for their potential in low-cost photovoltaic absorbers, solid-state batteries, and thermal-electric energy conversion, offering alternatives to more expensive or toxic semiconductor systems.

photovoltaic absorber layersthermoelectric materialssolid-state battery componentssemiconductor researchenergy conversion devicesmaterials chemistry development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	3.985	kg/m³	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	—
Formation Energy(ΔHf)	-0.5039	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.

Cu5Si2S7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control