Te

metal

· Te

Tellurium is a brittle metalloid element with semiconducting properties, commonly used in thermoelectric devices, photovoltaic applications, and as a dopant in specialty alloys and glasses. It is valued in industries requiring thermal-to-electric energy conversion and infrared optical components, where its unique electronic and optical characteristics provide advantages over conventional alternatives. Engineers select tellurium primarily for high-temperature thermoelectric generators, solar cells, and specialized optical systems where its combination of thermal and electrical behavior justifies its cost and handling complexity.

thermoelectric power generationphotovoltaic cellsinfrared optics and windowssemiconductor dopinghigh-temperature applicationsspecialty alloy additives

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	6,051	ksi	DFT · OptB88vdW
↳	3,145.8	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	4.308	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.4000	-	DFT · OptB88vdW
↳	0.2233	-	DFT · PBE
Shear Modulus(G)2 entries	1,857.9	ksi	DFT · OptB88vdW
↳	2,134.4	ksi	DFT · PBE

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
Density(ρ)	0.2315	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	0.1650	eV	DFT · OptB88vdW
↳	0.6150	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	63.60	-	DFT · OptB88vdW
↳	30.30	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.00667	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.00667	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	1.232	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00321	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00431	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-168.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	239.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	19.94	%	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.03832	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

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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.

Te — Properties & Data | MatWorld

Te

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

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Environmental

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