Barium Stannate (BaSnO3)

Ternary Barium Stannate (BaSnO₃) compound is a wide bandgap oxide showing n-type semiconducting behavior and transparency in the visible spectrum. The source material of BaSnO₃ whether undoped or doped was prepared by mixing SnO₂ and BaCO₃ powder in a stoichiometric composition. Incongruent and strong evaporation of BaSnO₃ constituents at high temperatures makes the growth from the melt challenging. Optical properties of BaSnO₃ were intensively investigated both experimentally and theoretically to understand its fundamental properties and elicit its capability in a device design for specific fields of applications. Flux-grown BaSnO₃ crystals were intensively investigated for electrical properties whether undoped or doped with La and Sb. Stronger scattering is also reflected in a steeper decrease in the Hall mobility with free electron concentration as compared with La-doped BaSnO₃ crystals. BaSnO₃ possesses structural and electronic properties that may make it very attractive for generation 2DEGs when combined with another suitable perovskite.