Tl2SiSe3

ceramic

· JVASP-11170· Tl2SiSe3

Tl2SiSe3 is a layered ceramic compound combining thallium, silicon, and selenium that belongs to the family of chalcogenide materials. This is a research-phase material not yet widely deployed in commercial applications, but shows promise in optoelectronic and thermoelectric device research due to its layered crystal structure and moderate mechanical properties. The material is of particular interest to researchers developing next-generation semiconductors and photonic devices where tunable band gaps and anisotropic properties are advantageous.

thermoelectric devicesinfrared opticslayered semiconductor researchphotonic materialsphase-change memory devicesmaterials science research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	2,976.2	ksi	DFT · OptB88vdW
Exfoliation Energy(Eexf)	127.4	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3200	-	DFT · OptB88vdW
Shear Modulus(G)	1,448.9	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2284	lb/in³	DFT · OptB88vdW

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

Filter by

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.519	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	8.818	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.5200	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.780	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00241	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00195	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-228.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	269.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.4682	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.

Tl2SiSe3 — Properties & Data | MatWorld

Tl2SiSe3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental