CdI2 — Properties & Data | MatWorld

CdI2

Name: CdI2
Brand: MatWorld

semiconductor

· CdI2

Cadmium iodide (CdI₂) is a layered semiconductor compound belonging to the II-VI chalcogenide family, characterized by a layered crystal structure that enables mechanical exfoliation into two-dimensional materials. While primarily investigated in research settings for optoelectronic and quantum applications, CdI₂ is notably used in radiation detection systems, photovoltaic research, and as a precursor material for manufacturing specialized optical components. Engineers consider CdI₂ when designing high-sensitivity detectors, exploring van der Waals heterostructures, or developing next-generation thin-film devices where its layered nature and semiconducting properties offer advantages over bulk alternatives.

radiation detection systemstwo-dimensional materials researchoptoelectronic devicesphotovoltaic prototypingthin-film semiconductorsquantum material platforms

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	19.49	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	84.26	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	9.370	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	5.562	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	3.800	eV	Measured
↳	2.119	eV	DFT · OptB88vdW
↳	3.362	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	13.65	-	DFT · OptB88vdW
↳	10.70	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.949	-	DFT · OptB88vdW
↳	4.504	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.01566	C/m²	DFT · OptB88vdW
↳	0.00612	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00213	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00143	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-196.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	426.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	1.930	%	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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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.5815	eV/atom	DFT · OptB88vdW
↳	-0.7055	eV/atom	Measured

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

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

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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.

CdI2

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