Spectral properties of Ce³⁺ doped yttrium lanthanum oxide transparent ceramics

Ce³⁺-doped yttrium lanthanum oxide (Y_0.9La_0.1)₂O₃ transparent ceramics is fabricated with nanopowders and sintered in H₂ atmosphere. The spectral properties of Ce:(Y_0.9La_0.1)₂O₃ transparent ceramics are investigated. There appear two characteristic absorption peaks of Ce³⁺ ions at 230 nm and 400 nm, separately. It is found that Ce³⁺ ions can efficiently produce emission at 384 nm from (Y_0.9La_0.1)₂O₃ transparent ceramic host, while the emission is completely quenched in Re₂O₃ (Re=Y, Lu, La) host materials.