Photoluminescence from Epitaxial Films of Perovskite-type Alkaline-earth Stannates

Abstract

The epitaxial films of the recently developed calcium and strontium stannates phosphors with perovskite or its related structure were fabricated by the pulsed-lased deposition method. The films were all highly transparent in the visible region, and showed intense luminescence of several colors under ultraviolet excitation. Light scattering at the substrates' surfaces varied the appearance of photoluminescence. In combination with epitaxial-film-growth technologies for many perovskite functional materials, the obtained results provide a promise for future developments of multifunctional optoelectronic devices.