Borate, Chalcogen, Nonmetal, Rare earth, Photoluminescence spectra

• Al-Ce-Lu-O
• Al-Ce-Ga-Gd-O
• B-Ba-Eu-Gd-O
• B-Ba-Eu-O-Y
• B-Eu-Gd-O-Y
• luminescent
• nonmetal
• chalcogen
• borate
• rare earth
• cubic
• orthorhombic
• monoclinic
• hexagonal
• trigonal