Chalcogen, Lanthanoid, Monoclinic, Photoluminescence spectra

• Al-Dy-Eu-O-Sr
• Al-Eu-O-Sr
• Al-Eu-N-O-Si-Sr
• B-Eu-La-O
• Ba-Eu-O-Si-Zn
• chalcogen
• lanthanoid
• rare earth
• luminescent
• nonmetal