GeI2 — Properties & Data | MatWorld

GeI2

Name: GeI2
Brand: MatWorld

semiconductor

· GeI2

GeI₂ is a layered semiconductor compound composed of germanium and iodine, belonging to the family of group IV-VII chalcohalides. It is primarily investigated in research and emerging applications rather than established industrial production, with potential utility in optoelectronic devices, photodetectors, and next-generation thin-film solar cells due to its direct bandgap and layered crystal structure that enables efficient light-matter interaction.

photodetectors and imagingthin-film photovoltaicsoptoelectronic devicesinfrared sensingresearch semiconductorslayer heterostructures

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	15.50	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2800	-	DFT · OptB88vdW
Shear Modulus(G)	4.840	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.644	kg/m³	DFT · OptB88vdW

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

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Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.067	eV	DFT · OptB88vdW
↳	1.500	eV	Measured
Dielectric Constant (Relative Permittivity)(εr)	21.97	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	8.935	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.5554	C/m²	DFT · OptB88vdW

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)	0.1612	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.2211	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

Export Control

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.

GeI2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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