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Nonmetal, Photoluminescence spectra
Al-Ce-O-Y
Al-Eu-N-O-Si-Sr
Ca-Eu-O-Sn
Al-Eu-N-O-Si
Ba-Eu-O-Si-Zn
nonmetal
luminescent
chalcogen
rare earth
lanthanoid
monoclinic
tetragonal
cubic
orthorhombic
trigonal