AgI

semiconductor
· AgI

Silver iodide (AgI) is an inorganic semiconductor compound formed from silver and iodine, belonging to the I–VII binary chalcogenide family. It is primarily used in photographic emulsions, cloud seeding applications, and specialized optical coatings, where its light-sensitive and nucleation properties are leveraged. AgI is notable for its role in infrared optics and as a research compound for photovoltaic and photodetector development, though it faces competition from more stable alternatives in modern optoelectronic applications.

photographic emulsionscloud seeding nucleantsinfrared optical coatingsphotodetector researchsolid-state imagingsemiconductor research

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
PropertyValueUnitConditionsSource
Bulk Modulus(K)3 entries
4,598.8
ksi
4,413.5
ksi
3,882.7
range 3,642.7–4,598.8median of 3 measurements
ksi
Elastic Compliance Tensor(Sij)
Matrix (redacted)
1/GPa
Elastic Anisotropy(AU)
0.02081
-
Elastic Stiffness Tensor(Cij)
Matrix (redacted)
ksi
Exfoliation Energy(Eexf)
88.71
meV/atom
Poisson's Ratio(ν)2 entries
0.3478
-
0.4300
-
Shear Modulus(G)3 entries
1,558.1
ksi
733.9
ksi
967.8
range 886.6–1,558.1median of 3 measurements
ksi
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.
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Thermal Conductivity(k)
1.410
BTU/(hr·ft·°F)
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
0.1995
lb/in³
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)2 entries
3.020
eV
1.260
eV
Dielectric Constant (Relative Permittivity)(εr)3 entries
7.160
-
7.353
-
7.154
range 5.479–18.11median of 6 measurements
-
Electronic Dielectric Tensor(ε∞)
Matrix (redacted)
-
Total Dielectric Tensor(ε)
Matrix (redacted)
-
Magnetic Moment(μB)
0.000
µB
Piezoelectric Modulus(eij)2 entries
0.09146
C/m²
0.3271
C/m²
Piezoelectric Stress Tensor(eij)
Matrix (redacted)
C/m²
Seebeck Coefficient(S)
-59.97
µV/K
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.
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.00350
eV/atom
Formation Energy(ΔHf)2 entries
-0.3208
eV/atom
-0.2033
eV/atom
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.
Verified Unverified Low confidence (<80%) Link to source

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.
AgI — Properties & Data | MatWorld