Cu4 S2
semiconductor· Cu4 S2
Cu4S2 is a copper sulfide semiconductor compound that belongs to the family of metal chalcogenides, materials increasingly studied for optoelectronic and energy conversion applications. While primarily a research material rather than a widely commercialized product, copper sulfides are investigated for photovoltaic devices, thermoelectric generators, and photodetectors due to their tunable bandgap and earth-abundant constituent elements. Engineers consider this material class as a potentially lower-cost alternative to conventional semiconductors like CdTe or perovskites, though device-level performance and stability remain active development areas.
photovoltaic cellsthermoelectric devicesphotodetectorsthin-film semiconductorsresearch/emerging applicationsearth-abundant optoelectronics
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | — | ksi | — | — | |
Shear Modulus(G) | — | ksi | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | — | 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.