Alkali, Chalcogen, Nonmetal, Photoluminescence spectra, Trigonal

• Eu-Li-O-Si-Sr
• Bi-Na-O-Pr-Ti
• Ca-Eu-Li-O-P
• Ca-Eu-Mg-Na-O-P
• Al-Eu-Na-O-P
• nonmetal
• chalcogen
• alkali
• luminescent
• lanthanoid