HoTlS2 — Properties & Data | MatWorld

HoTlS2

ceramic

· JVASP-36126· HoTlS2

HoTlS₂ is a rare-earth thallium sulfide ceramic compound combining holmium and thallium in a sulfide matrix, representing an experimental material in the family of chalcogenide ceramics. This material is primarily of research interest for potential applications in solid-state electronics, photonics, and thermal management systems where the unique electronic properties of rare-earth chalcogenides may offer advantages over conventional ceramics. Engineers would consider this compound in specialized applications requiring specific bandgap engineering or thermal transport properties, though its practical use remains limited to laboratory and development environments given the toxicity and reactivity concerns associated with thallium-containing systems.

photonic devices (experimental)solid-state electronics researchthermoelectric materials developmentoptical coatings (research phase)thermal management systems (advanced applications)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	51.04	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2600	-	DFT · OptB88vdW
Shear Modulus(G)	30.87	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	6.964	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	1.544	eV	DFT · OptB88vdW
↳	2.244	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	27.19	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.701	-	DFT · OptB88vdW
↳	6.211	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.9967	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.4700	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00248	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000842	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-289.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	122.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	17.76	%	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)	-1.623	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.

HoTlS2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental