Chalcogen, Transitional, Trigonal, Wavelength for luminescence

• Eu-La-O-P-Pb-Si-Zr
• Ca-Eu-O-V
• Ba-Cr-O-Ti
• Eu-Ga-Ge-La-O-Tb
• Al-B-Eu-O-Y
• chalcogen
• transitional
• luminescent
• rare earth
• lanthanoid