TbTlSe2 — Properties & Data | MatWorld

TbTlSe2

ceramic

· JVASP-56234· TbTlSe2

TbTlSe2 is a ternary ceramic compound composed of terbium, thallium, and selenium, representing an experimental intermetallic or chalcogenide material rather than a commercial ceramic. This material belongs to the research family of rare-earth thallium selenides, which are investigated for potential applications in thermoelectric energy conversion and solid-state electronic devices where the combination of rare-earth and chalcogenide chemistry offers tunable electronic and thermal properties. While not yet in widespread industrial use, compounds in this class are explored by materials scientists for high-temperature power generation and specialized semiconductor applications where conventional thermoelectrics reach performance or thermal-stability limits.

thermoelectric devices (research)solid-state electronics (experimental)rare-earth selenide compoundshigh-temperature energy conversionmaterials research and characterization

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2680	lb/in³	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	1.288	eV	DFT · OptB88vdW
↳	1.769	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	24.82	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	8.630	-	DFT · OptB88vdW
↳	6.940	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.847	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.3500	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	0.00356	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000650	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-323.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	95.58	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	27.92	%	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)	-1.442	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.

TbTlSe2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental