Ga₁.₅Cu₀.₅Se₂.₅ is a quaternary semiconductor compound combining gallium, copper, and selenium in a non-stoichiometric ratio, belonging to the family of chalcogenide semiconductors. This material is primarily of research interest for photovoltaic and optoelectronic applications, where mixed-valence copper-gallium selenides are explored as absorber layers or buffer materials in thin-film solar cells and photodetectors. While not yet widely commercialized, this composition family is investigated as an alternative to conventional cadmium-based or all-inorganic perovskite absorbers, offering potential advantages in bandgap tunability and earth-abundant element content, though synthesis control and stability remain active research challenges.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 1.760 | eV | — |