Cu2Se — Properties & Data | MatWorld

Cu2Se

semiconductor

· Cu2Se

Cu₂Se is a copper selenide compound belonging to the p-type semiconductor family, notable for its layered crystal structure and mixed-valence copper chemistry. It is primarily investigated for thermoelectric energy conversion applications where its low thermal conductivity combined with semiconducting behavior makes it attractive for waste heat recovery and power generation devices. Cu₂Se is also explored in photovoltaic research and as a material for phase-change memory devices; while not yet widely deployed in mainstream commercial products, it represents a promising candidate in the broader copper chalcogenide materials platform for solid-state energy applications.

thermoelectric power generationwaste heat recoveryphotovoltaic absorber layersphase-change memorysolid-state electronics researchenergy harvesting devices

Compliance & Regulations

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

Units:

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	45.51	GPa	—
Poisson's Ratio(ν)	0.4000	-	—
Shear Modulus(G)	-7.370	GPa	—

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Property	Value	Unit	Conditions	Source
Thermal Conductivity(k)2 entries	0.9150	W/(m·K)	—
↳	0.9150	W/(m·K)	427°C

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Density(ρ)	6.538	kg/m³	—

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Property	Value	Unit	Conditions	Source
Band Gap(Eg)2 entries	1.230	eV	—
↳	0.2820	eV	—
Dielectric Constant (Relative Permittivity)(εr)	75.61	-	—
Electrical Conductivity(σ)	238.1	S/cm	427°C
Electrical Resistivity(ρe)	0.0000420	Ω·m	427°C
Magnetic Moment(μB)	0.000	µB	—
Piezoelectric Modulus(eij)	0.6191	C/m²	—
Thermoelectric Power Factor(PF)	0.000962	W/(m·K²)	427°C
Seebeck Coefficient(S)2 entries	201	μV/K	427°C
↳	-72.51	µV/K	—
Thermoelectric Figure of Merit(zT)	0.7359	-	427°C

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.09790	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.2256	eV/atom	—
↳	-0.00972	eV/atom	—

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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.