Bi2Te5Pb2 — Properties & Data | MatWorld

Bi2Te5Pb2

ceramic

· JVASP-29571· Bi2Te5Pb2

Bi₂Te₅Pb₂ is a bismuth telluride-lead compound ceramic belonging to the family of bismuth chalcogenides, which are primarily known for thermoelectric applications. This material is typically encountered in research and development contexts rather than widespread industrial production, as it represents an experimental composition aimed at optimizing thermoelectric performance through lead doping of the bismuth telluride system. The bismuth telluride family is valued in thermoelectric cooling and power generation where thermal-to-electrical or electrical-to-thermal conversion efficiency is critical, and lead incorporation is investigated to modify band structure and reduce thermal conductivity while maintaining electrical conductivity.

thermoelectric cooling deviceswaste heat recovery systemsresearch-phase materialssolid-state refrigerationthermal energy harvestingsemiconductor research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	29.63	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	15.68	GPa	DFT · OptB88vdW

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Property	Value	Unit	Conditions	Source
Density(ρ)	7.526	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.03000	eV	DFT · OptB88vdW
↳	0.02300	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	82.47	-	DFT · OptB88vdW
↳	120.9	-	DFT · TBmBJ
Thermoelectric Power Factor(PF)2 entries	0.000579	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000399	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-84.43	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	58.77	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	5.840	%	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)	0.06960	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.2568	eV/atom	DFT · OptB88vdW

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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.

Bi2Te5Pb2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental