Lanthanoid, Transitional, Monoclinic, Photoluminescence spectra

• B-Eu-La-O
• Eu-Nb-O-Y
• Ba-Eu-O-Si-Zn
• Eu-La-O-P
• Eu-Mo-O-Y
• rare earth
• transitional
• lanthanoid
• chalcogen
• luminescent