Cu2GeS4

metal

· JVASP-17257· Cu2GeS4

Cu₂GeS₄ is a quaternary semiconductor compound belonging to the chalcogenide family, combining copper, germanium, and sulfur in a crystalline structure. This material is primarily of research and development interest rather than established commercial use, investigated for its potential in photovoltaic devices, thermoelectric applications, and optoelectronic components due to its tunable bandgap and semiconducting properties. Engineers and materials scientists explore Cu₂GeS₄ as an alternative to conventional semiconductors in niche applications where earth-abundant and less-toxic constituent elements offer advantages over traditional compound semiconductors.

photovoltaic researchthermoelectric devicesoptoelectronic componentsthin-film semiconductorsmaterials research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1434	lb/in³	—

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

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—
Seebeck Coefficient(S)	-0.7567	µV/K	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.07830	eV/atom	—
Formation Energy(ΔHf)	-0.2686	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.

Cu2GeS4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control