Lanthanoid, Luminescent, Photoluminescence spectra

• Al-Ce-O-Y
• Eu-O-Y
• Eu-O-Si-Sr
• Al-Ba-Eu-Mg-O
• Al-Eu-O-Sr
• rare earth
• luminescent
• lanthanoid
• chalcogen
• alkaline
• monoclinic
• orthorhombic
• tetragonal
• cubic
• hexagonal