Nonmetal, Rare earth, Photoluminescence spectra, Trigonal

• B-Ce-Lu-O-Sc
• B-Ce-In-O-Sc
• Ba-Ca-Eu-Mg-O-Si
• Eu-Li-O-Si-Sr
• Al-Ca-Eu-N-Si
• nonmetal
• lanthanoid
• rare earth
• luminescent
• chalcogen