ErTlTe2 — Properties & Data | MatWorld

ErTlTe2

ceramic

· JVASP-36153· ErTlTe2

ErTlTe2 is a ternary ceramic compound combining erbium, thallium, and tellurium—a rare combination in conventional engineering applications. This material exists primarily in research and development contexts rather than established industrial production, and is of interest within the semiconductor and solid-state physics communities for its potential in thermoelectric, optoelectronic, or photovoltaic device exploration. The material family represents an unconventional search for functional ceramics with specialized electronic or thermal transport properties that differ significantly from conventional oxide or nitride ceramics.

thermoelectric researchexperimental semiconductorssolid-state device developmenthigh-density ceramic compoundsmaterials science characterizationrare-earth compound systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	35.14	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2500	-	DFT · OptB88vdW
Shear Modulus(G)	23.69	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	7.635	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.7040	eV	DFT · OptB88vdW
↳	1.031	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	23.33	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	10.51	-	DFT · OptB88vdW
↳	8.540	-	DFT · TBmBJ
Electron Effective Mass(m*e)	2.200	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.2167	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	0.00437	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000469	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-284	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	74.83	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	32.10	%	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)	-1.069	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.

ErTlTe2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental