TmTlSe2 — Properties & Data | MatWorld

TmTlSe2

ceramic

· JVASP-79634· TmTlSe2

TmTlSe₂ is a ternary chalcogenide ceramic compound combining thulium, thallium, and selenium—a material family primarily explored in solid-state physics and materials research rather than established industrial production. This compound belongs to the broader class of rare-earth and post-transition metal selenides, which are investigated for potential optoelectronic, thermoelectric, and quantum material applications due to their layered crystal structures and electronic properties.

Thermoelectric devices (research phase)Optoelectronic semiconductors (experimental)Solid-state physics studiesQuantum materials researchHigh-density ceramic compounds

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	7.803	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.241	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	25.66	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.9367	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.3233	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	0.00294	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000660	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-309.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	97.69	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)	-1.430	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.

TmTlSe2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental