KAlTe2 — Properties & Data | MatWorld

KAlTe2

metal

· KAlTe2

KAlTe2 is an intermetallic compound combining potassium, aluminum, and tellurium, representing a rare earth-adjacent metallic system with limited commercial availability. This material appears to be primarily a research compound studied for its electronic and structural properties rather than an established engineering alloy; it belongs to the family of ternary metal tellurides that have potential applications in thermoelectric and optoelectronic device development. Engineers would consider this material only in specialized advanced applications where its unique phase composition and electronic characteristics provide advantages over conventional alloys or semiconductors.

thermoelectric device researchexperimental semiconductor applicationsmaterials science characterizationhigh-temperature electronics (exploratory)photonic/optoelectronic research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	22.93	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2300	-	DFT · OptB88vdW
Shear Modulus(G)	15.24	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.138	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	1.951	eV	DFT · OptB88vdW
↳	2.575	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	11.91	-	DFT · OptB88vdW
↳	9.950	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.938	-	DFT · OptB88vdW
↳	5.651	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.3367	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.6767	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000828	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00296	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-115.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	284.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	11.21	%	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)	-0.8798	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.

KAlTe2

Mechanical Properties

Physical Properties

Electrical Properties

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