Cu4 Se8

semiconductor

· Cu4 Se8

Cu₄Se₈ is a quaternary copper selenide compound belonging to the family of metal chalcogenides, which are semiconducting materials formed from metal cations and selenium anions. This material exists primarily in research contexts where it is studied for its electronic and optoelectronic properties, particularly as a candidate thermoelectric material and for photovoltaic applications in thin-film solar cells. Cu₄Se₈ and related copper selenide phases are notable within the broader class of earth-abundant semiconductor alternatives to conventional cadmium telluride or CIGS (copper indium gallium selenide) solar absorbers, offering potential cost and toxicity advantages, though current engineering applications remain limited to laboratory-scale development.

thin-film photovoltaic researchthermoelectric device developmentsemiconductor optoelectronicsmaterials research—phase stability studiesearth-abundant solar absorber materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00270	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.1030	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 Se8

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control