Thallium iodide (TlI) is an ionic ceramic compound belonging to the halide family, characterized by a rock salt crystal structure with relatively high density. Historically studied for infrared optical applications and radiation detection, TlI has limited modern industrial use due to thallium's toxicity and the availability of superior alternatives like cesium iodide and sodium iodide for scintillation and imaging. Its primary research interest today remains in specialized optoelectronic and photodetector applications where its bandgap and optical properties offer potential advantages, though commercial adoption is constrained by health, regulatory, and performance considerations.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 21.47 | GPa | — | ||
Poisson's Ratio(ν) | 0.3100 | - | — | ||
Shear Modulus(G) | 9.700 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 7.324 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 2.040 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 39.92 | - | — | ||
| ↳ | 28.75 range 7.632–49.86median of 2 measurements | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -95.90 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.00880 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.6410 | eV/atom | — | ||
| ↳ | -0.6636 | eV/atom | — |