Tl4Te3Pb — Properties & Data | MatWorld

Tl4Te3Pb

ceramic

· JVASP-1065· Tl4Te3Pb

Tl₄Te₃Pb is a mixed-metal telluride ceramic compound combining thallium, tellurium, and lead in a complex crystalline structure. This material belongs to the family of semiconducting and thermoelectric ceramics, primarily of research and developmental interest rather than established industrial production. The compound is investigated for potential applications in thermoelectric energy conversion and solid-state electronics due to the electronic properties typical of mixed-chalcogenide systems, though its toxicity (thallium and lead content) and complex synthesis limit widespread commercial adoption compared to safer alternatives like bismuth telluride or skutterudites.

thermoelectric materials (research)solid-state electronicslow-temperature energy conversionsemiconductor researchhigh-density ceramicsexploratory chalcogenide compounds

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	29.94	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2800	-	DFT · OptB88vdW
Shear Modulus(G)	15.79	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	8.757	kg/m³	DFT · OptB88vdW

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

Filter by

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.2470	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	21.83	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.05000	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.06667	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00200	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00156	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-153.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	163.8	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)	-0.3443	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.

Tl4Te3Pb

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental