Zinc oxide (ZnO) is a wide-bandgap semiconductor ceramic compound with a hexagonal wurtzite crystal structure, widely available as both bulk material and thin films. It is extensively used in optoelectronic devices (LEDs, UV detectors, laser diodes), transparent conducting coatings, varistors for surge protection, and as a pigment and filler in rubber, plastics, and cosmetics. ZnO is favored over competing wide-bandgap semiconductors for UV applications due to its large exciton binding energy, abundance, and cost-effectiveness; it also offers good thermal stability and non-toxicity, making it a preferred alternative to cadmium-based compounds in many consumer and industrial applications.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Young's Modulus(E) | 111.0 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Melting Point / Solidus(Tm) | 2,248 | K | — | ||
Thermal Conductivity(k) | 54.00 | W/(m·K) | — | ||
Coefficient of Thermal Expansion(α (CTE)) | 0.00000475 | 1/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 5.606 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 3.370 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 8.500 | - | — |