Tl2Se3 — Properties & Data | MatWorld

Tl2Se3

ceramic

· JVASP-150795· Tl2Se3

Tl₂Se₃ is a layered chalcogenide ceramic compound composed of thallium and selenium, belonging to the family of metal selenides studied for their unique electronic and thermal properties. This material is primarily of research interest rather than established industrial production, with investigation focused on thermoelectric applications, infrared optics, and potential semiconductor device applications where its narrow bandgap and anisotropic crystal structure offer advantages over conventional alternatives. Engineers consider Tl₂Se₃ for niche applications requiring materials with tunable optical absorption in the infrared region or enhanced thermoelectric figure-of-merit, though its toxicity and relative instability compared to more mature ceramics limit widespread adoption.

thermoelectric devicesinfrared optical componentssemiconductor researchnarrow-bandgap materialsthermal energy conversion (experimental)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	14.67	GPa	DFT · OptB88vdW
Shear Modulus(G)	-20.22	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	7.501	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.6250	eV	DFT · OptB88vdW
↳	1.125	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)	11.97	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	33.78	%	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)	-0.2470	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.

Tl2Se3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental