KLuS2

ceramic

· JVASP-36117· KLuS2

KLuS₂ is a rare-earth ceramic compound belonging to the dichalcogenide family, where lutetium forms a disulfide phase. This material is primarily of research and development interest rather than established in high-volume commercial production. Its potential applications leverage the thermal stability and electronic properties characteristic of rare-earth sulfide ceramics, making it relevant for specialized high-temperature environments, optoelectronic devices, or advanced structural applications where conventional ceramics reach performance limits.

high-temperature ceramics (research)optoelectronic windowsrefractory coatingsthermal barrier materialsadvanced composites (experimental)extreme environment applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1704	lb/in³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	2.425	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	13.60	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	5.411	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.6167	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.730	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	0.00302	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00181	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-253.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	266.9	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.

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)	-2.061	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.

KLuS2 — Properties & Data | MatWorld

KLuS2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental