YbI2 — Properties & Data | MatWorld

YbI2

ceramic

· JVASP-29624· YbI2

YbI₂ is an ionic ceramic compound composed of ytterbium and iodine, belonging to the rare-earth halide family of materials. This is primarily a research-stage compound studied for its layered crystal structure and potential as a two-dimensional material, rather than a mature industrial ceramic. The material shows promise in emerging applications including optoelectronics, solid-state lighting, and advanced semiconductor devices where rare-earth halides are being explored as alternatives to conventional oxide ceramics.

rare-earth halide researchtwo-dimensional materialsoptoelectronic devicessolid-state lightingsemiconductor applicationsexperimental/laboratory scale

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	15.97	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	84.17	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	9.380	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	6.001	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	3.655	eV	DFT · OptB88vdW
↳	5.030	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	6.772	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.264	-	DFT · OptB88vdW
↳	3.273	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.007	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.540	me	DFT · OptB88vdW · 27°C
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00386	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00125	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-267.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	253.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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)	-1.714	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.

YbI2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental