K3As — Properties & Data | MatWorld

K3As

ceramic

· K3As

K3As is a ceramic compound composed of potassium and arsenic in a 3:1 stoichiometric ratio, belonging to the family of metal arsenide ceramics. This material is primarily of research and academic interest rather than established industrial production, with potential applications in semiconductor research, advanced ceramics development, and studies of ionic conductivity in solid-state systems. Engineers evaluating K3As would typically do so for experimental solid-state device development or fundamental materials science investigation rather than conventional engineering applications.

solid-state ceramics researchsemiconductor precursor materialsionic conductor studiesexperimental electronicsadvanced materials developmentlaboratory synthesis

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.168	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.2140	eV	DFT · OptB88vdW
↳	1.534	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	20.16	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	9.190	-	DFT · OptB88vdW
↳	4.591	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000298	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000159	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-51.96	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	140.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	31.95	%	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)	-0.4368	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

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.

K3As

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental