Lead iodide (PbI₂) is a layered semiconducting compound that belongs to the halide perovskite family, characterized by a hexagonal crystal structure and van der Waals-bonded layers. While primarily investigated as a research material for next-generation optoelectronic devices, PbI₂ is industrially significant as a precursor material in the synthesis of hybrid organic-inorganic perovskites (such as methylammonium lead iodide) used in high-efficiency photovoltaic cells and light-emitting applications. Engineers select PbI₂ for its tunable bandgap, strong light-absorption characteristics, and solution-processability, making it attractive for low-cost, scalable thin-film device manufacturing where conventional silicon or III-V semiconductors are cost-prohibitive.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 2,074 | ksi | — | ||
Exfoliation Energy(Eexf) | 87.36 | meV/atom | — | ||
Poisson's Ratio(ν) | 0.3100 | - | — | ||
Shear Modulus(G) | 925.3 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.2143 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 2.360 | eV | — | ||
| ↳ | 2.272 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 20.24 | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.00202 | C/m² | — | ||
| ↳ | 0.000 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -139.6 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.00170 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.6056 | eV/atom | — | ||
| ↳ | -0.6585 | eV/atom | — |