ErSeI — Properties & Data | MatWorld

ErSeI

ceramic

· JVASP-3990· ErSeI

ErSeI is a ternary ceramic compound composed of erbium, selenium, and iodine, representing a layered halide perovskite material under active research. This material falls within the family of rare-earth halides and is primarily investigated for optoelectronic and photonic applications rather than structural engineering roles. ErSeI and related compounds are of interest to researchers exploring next-generation semiconductors, particularly for applications requiring tunable bandgaps, radiation detection, or novel light-emitting devices, though it remains largely in the experimental/laboratory phase rather than established industrial production.

experimental optoelectronicsradiation detection researchphotonic materials developmentrare-earth compound studiesscintillator researchtheoretical materials modeling

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	28.51	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	62.06	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2100	-	DFT · OptB88vdW
Shear Modulus(G)	18.39	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	6.012	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	2.194	eV	DFT · OptB88vdW
↳	2.921	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	14.54	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.094	-	DFT · OptB88vdW
↳	4.992	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.9567	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.8467	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	0.00268	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00223	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-300.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	285.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	5.620	%	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)	-1.722	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.

ErSeI

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental