TlBiSe2 — Properties & Data | MatWorld

TlBiSe2

ceramic

· JVASP-99909· TlBiSe2

TlBiSe2 is a ternary ceramic compound composed of thallium, bismuth, and selenium, belonging to the family of chalcogenide semiconductors. This material is primarily studied in research contexts for thermoelectric and optoelectronic applications, where its layered crystal structure and electronic properties make it a candidate for solid-state energy conversion and infrared sensing devices. While not yet established in high-volume industrial production, TlBiSe2 represents the broader class of bismuth chalcogenides that engineers evaluate for niche applications requiring specific band gaps or thermal transport characteristics.

thermoelectric devicesinfrared detectorssemiconductor researchsolid-state energy conversionoptoelectronic componentsexotic material development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	40.17	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	24.78	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	8.236	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.2530	eV	DFT · OptB88vdW
↳	0.6800	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	20.01	-	DFT · OptB88vdW
↳	14.26	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.07333	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.08333	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00158	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00327	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-118.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	203.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	23.24	%	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)	0.1551	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.3148	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.

TlBiSe2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental