Cu2SeS3

metal

· JVASP-145132· Cu2SeS3

Cu₂SeS₃ is a mixed-anion copper chalcogenide compound combining selenium and sulfur in a single crystal structure. This material belongs to the family of ternary metal chalcogenides, which are primarily of research interest for their semiconducting and photovoltaic properties rather than established industrial commodities. Engineers consider such compounds for next-generation thin-film solar cells, photodetectors, and optoelectronic devices where tunable band gaps and light-harvesting efficiency are critical, though the material remains in the experimental phase with limited commercial deployment compared to binary semiconductors like CdTe or CIGS.

thin-film solar cellsphotodetector developmentoptoelectronic researchsemiconductor experimentationphotovoltaic materialsmaterials science research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	4.336	kg/m³	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.5870	eV	—
Magnetic Moment(μB)	0.000	µB	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.09450	eV/atom	—
Formation Energy(ΔHf)	-0.09305	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.

Cu2SeS3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control