Co1 Cu2 Ge1 S4

semiconductor

· Co1 Cu2 Ge1 S4

Co₁Cu₂Ge₁S₄ is a quaternary chalcogenide semiconductor compound combining cobalt, copper, germanium, and sulfur elements. This material belongs to the family of mixed-metal sulfides and represents an experimental composition of interest in solid-state chemistry and materials research, rather than an established commercial product. Its potential applications lie in photovoltaic devices, thermoelectric energy conversion, and optoelectronic components where mixed-valence metal sulfides offer tunable band gaps and mixed ionic-electronic conductivity.

experimental photovoltaic absorbersthermoelectric materials developmentoptoelectronic semiconductorsthin-film solar cellssolid-state chemistry research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	76.68	GPa	—
Shear Modulus(G)	26.15	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.01730	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.3550	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.

Co1 Cu2 Ge1 S4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control