ErTlSe2 — Properties & Data | MatWorld

ErTlSe2

ceramic

· JVASP-79806· ErTlSe2

ErTlSe2 is a ternary ceramic compound combining erbium, thallium, and selenium elements. This is a research-phase material studied primarily in semiconductor and optoelectronic contexts rather than an established commercial ceramic. The material family exhibits potential for infrared applications and narrow-bandgap electronic devices, though industrial adoption remains limited; researchers are investigating its thermal, electrical, and optical properties to assess viability against more mature alternatives like cadmium telluride or lead chalcogenides.

infrared detectors (research)optoelectronic semiconductorsthermal photonics (experimental)rare-earth compound characterizationsolid-state physics researchwide-gap semiconductor alternatives (exploratory)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	7.720	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.298	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	25.32	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	8.578	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.9567	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.3667	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	0.00336	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000680	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-331.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	96.73	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	-1.435	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.

ErTlSe2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental