Borate, Chalcogen, Metalloid, Nonmetal, Photoluminescence spectra

• B-Cu-Li-O
• B-Ba-Eu-Gd-O
• B-Eu-Gd-O-Y
• B-Ba-Eu-O-Y
• B-Bi-Ca-O-Y
• metalloid
• nonmetal
• chalcogen
• borate
• luminescent
• orthorhombic
• monoclinic
• tetragonal
• trigonal
• hexagonal