K3Cu3As2 — Properties & Data | MatWorld

K3Cu3As2

metal

· K3Cu3As2

K3Cu3As2 is an intermetallic compound combining potassium, copper, and arsenic elements, belonging to the family of ternary metal arsenides. This is a research-phase material with limited industrial deployment; it is primarily of interest in solid-state chemistry and materials science studies exploring novel metal combinations for potential electronic, thermoelectric, or structural applications where arsenic-containing intermetallics may offer unique phase behavior or transport properties.

thermoelectric researchintermetallic compoundssolid-state materials developmentexploratory metallurgysemiconductor precursors

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	3.866	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.363	eV	DFT · OptB88vdW
↳	1.552	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	12.31	-	DFT · PBE
↳	10.88 range 8.582–13.18median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	6.772	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.5600	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.453	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00354	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00206	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-241.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	376.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	31.63	%	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.3848	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

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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.

K3Cu3As2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

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