Chalcogen, Rare earth, Photoluminescence spectra

• Al-Ce-O-Y
• Eu-O-Y
• Eu-O-Si-Sr
• Ca-Eu-Mo-O
• Al-Ba-Eu-Mg-O
• rare earth
• chalcogen
• lanthanoid
• luminescent
• transitional
• monoclinic
• tetragonal
• orthorhombic
• cubic
• trigonal