Alkali, Chalcogen, Nonmetal, Luminescence, Trigonal

• Ca-Eu-Mg-Na-O-P
• Ca-Eu-Li-O-P
• Eu-Li-O-Si-Sr
• B-Ba-Ce-Eu-Mg-Na-O-Tb
• Ba-Eu-K-O-Sm-W
• photoluminescence spectra
• wavelength for luminescence
• values of luminescence
• luminescence lifetime
• chromaticity diagram
• nonmetal
• chalcogen
• alkali
• luminescent
• rare earth