YbS2

ceramic

· JVASP-93767· YbS2

YbS2 is an ytterbium disulfide ceramic compound belonging to the layered transition metal dichalcogenide family. While primarily investigated in research settings rather than established industrial production, this material is of interest for electronic and photonic applications due to its layered crystal structure, which can exhibit semiconducting or metallic behavior depending on preparation and doping. Engineers and materials researchers consider YbS2 and related rare-earth dichalcogenides for niche applications requiring unusual electronic properties, high-temperature stability, or optical functionality that conventional ceramics cannot provide.

research semiconductor applicationshigh-temperature ceramicsphotonic devicesthin-film electronicsrare-earth compound development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	9,653.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.4900	-	DFT · OptB88vdW
Shear Modulus(G)	3,438.8	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2417	lb/in³	DFT · OptB88vdW

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Filter by

Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.321	eV	DFT · OptB88vdW
↳	2.085	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	14.78	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.437	-	DFT · OptB88vdW
↳	5.527	-	DFT · TBmBJ
Electron Effective Mass(m*e)	2.457	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.213	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	21.11	%	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)	0.2608	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.383	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.

YbS2 — Properties & Data | MatWorld

YbS2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental