O4 Cu4

semiconductor
· O4 Cu4

O4 Cu4 is a copper-oxygen compound semiconductor with a composition of four copper atoms and four oxygen atoms, likely representing a mixed-valence copper oxide phase or a structurally complex copper-oxygen ceramic. This material belongs to the family of transition metal oxides, which are of significant research interest for their variable electrical and optical properties that depend sensitively on composition and crystal structure. The compound exhibits relatively low shear stiffness compared to its bulk modulus, suggesting anisotropic mechanical behavior typical of layered or defect-rich oxide structures; it may function as either a p-type or n-type semiconductor depending on oxygen stoichiometry and processing conditions.

experimental semiconductor researchcopper oxide electronicscatalytic materials developmentthin-film devicesphotovoltaic researchmaterials discovery

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)
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ksi——
Shear Modulus(G)
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ksi——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
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eV——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Formation Energy(ΔHf)
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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.