KSnAs — Properties & Data | MatWorld

KSnAs

ceramic

· KSnAs

KSnAs is a ternary intermetallic ceramic compound composed of potassium, tin, and arsenic, representing a specialized class of semiconducting or semi-metallic ceramics with layered crystal structures. This material is primarily of research interest rather than established industrial production, investigated for potential applications in thermoelectric devices, optoelectronics, and solid-state physics where its electronic band structure and thermal properties may offer advantages in niche applications. Engineers would consider KSnAs when exploring next-generation semiconducting ceramics or when designing experimental devices that exploit the unique electronic coupling between its constituent elements, though material availability and processing maturity remain significant practical constraints compared to conventional semiconductor alternatives.

thermoelectric devices (research)semiconductor researchphotovoltaic materials (exploratory)solid-state physics studieselectronic material synthesishigh-pressure ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	27.69	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2400	-	DFT · OptB88vdW
Shear Modulus(G)	17.27	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.042	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.3960	eV	DFT · OptB88vdW
↳	1.339	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	14.63	-	DFT · OptB88vdW
↳	14.16	-	DFT · PBE
↳	12.22 range 10.79–13.65median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	11.95	-	DFT · OptB88vdW
↳	7.624	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.1300	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.3700	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.4521	C/m²	DFT · OptB88vdW
↳	0.2134	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00216	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00168	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-135.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	169.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	33.98	%	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)	-0.4681	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.

KSnAs

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental