Cu2WSe4

Name: Cu2WSe4
Brand: MatWorld

semiconductor

· Cu2WSe4

Cu2WSe4 is a quaternary chalcogenide semiconductor compound combining copper, tungsten, and selenium elements in a fixed stoichiometry. This material belongs to the family of ternary and quaternary semiconductors being actively explored for photovoltaic and optoelectronic applications, where it offers potential advantages in band gap engineering and light absorption compared to binary or simpler ternary alternatives. Cu2WSe4 remains primarily in research and development stages, with investigation focused on thin-film solar cells, photodetectors, and related energy conversion devices where its crystal structure and electronic properties may enable improved efficiency or cost performance.

thin-film photovoltaicsphotodetectorsoptoelectronic devicessolar energy conversionlight-absorbing layerssemiconductor research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	4,391.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2300	-	DFT · OptB88vdW
Shear Modulus(G)	2,794.9	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2218	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	1.650	eV	Measured
↳	0.8870	eV	DFT · OptB88vdW
↳	1.438	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	8.869	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	9.863	-	DFT · OptB88vdW
↳	8.996	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.3409	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	9.833e-7	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00230	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	670.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	309.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	33.19	%	DFT · TBmBJ

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.3105	eV/atom	DFT · OptB88vdW

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

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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.

Cu2WSe4 — Properties & Data | MatWorld

Cu2WSe4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control