Bi4Te7Pb

ceramic

· JVASP-12475· Bi4Te7Pb

Bi4Te7Pb is a bismuth telluride-based ceramic compound doped with lead, belonging to the family of thermoelectric materials derived from Bi2Te3 systems. This material is primarily investigated for thermoelectric energy conversion applications, where it serves as an alternative or complementary composition to traditional bismuth telluride thermoelectrics, with the lead addition potentially modifying electronic and thermal transport properties. The compound finds application in solid-state cooling and power generation near room temperature, and its development reflects ongoing research to enhance the performance-to-cost ratio and thermal stability of thermoelectric devices compared to conventional alternatives.

thermoelectric cooling deviceswaste heat recovery systemssolid-state power generationresearch and development materialstemperature control modulesmaterials optimization studies

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	4,734	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2500	-	DFT · OptB88vdW
Shear Modulus(G)	3,192.3	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2723	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.4230	eV	DFT · OptB88vdW
↳	0.8170	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	33.56	-	DFT · OptB88vdW
↳	23.70	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.3433	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.5933	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000549	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000621	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-169.8	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	174.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	26.60	%	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00770	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.2671	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.

Bi4Te7Pb — Properties & Data | MatWorld

Bi4Te7Pb

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental