Alkali, Chalcogen, Rare earth, Transitional, Luminescence, Trigonal

• Ba-Eu-K-O-Sm-W
• Ho-Li-O-Ta
• Bi-Na-O-Pr-Ti
• Ba-K-O-Sm-W
• Bi-Er-Na-O-Ti
• wavelength for luminescence
• photoluminescence spectra
• values of luminescence
• luminescence lifetime
• chromaticity diagram
• transitional
• rare earth
• alkali
• chalcogen
• lanthanoid