Apatite, Chalcogen, Lanthanoid, Rare earth, Hexagonal, Luminescence

• Ce-O-P-Si-Sr
• Ca-Eu-La-O-Si
• Ba-Cl-Eu-O-P
• Ba-Eu-F-Gd-Na-O-P
• Ca-Eu-F-O-P-Sr
• photoluminescence spectra
• wavelength for luminescence
• values of luminescence
• chromaticity diagram
• luminescence lifetime
• lanthanoid
• rare earth
• apatite
• chalcogen
• luminescent