Alkali, Rare earth, Photoluminescence spectra, Trigonal

• Ca-Eu-Mg-Na-O-P
• Eu-Li-O-Si-Sr
• Bi-Na-O-Pr-Ti
• Ca-Eu-Li-O-P
• Ba-Ca-Eu-Na-O-P
• alkali
• rare earth
• lanthanoid
• luminescent
• chalcogen