Conductor, Luminescent, Semiconductor, Wavelength for luminescence

• Eu-O-Y
• O-Zn
• S-Zn
• Er-O-Y-Yb
• Se-Zn
• semiconductor
• conductor
• luminescent
• chalcogen
• transitional
• cubic
• tetragonal
• monoclinic
• hexagonal
• orthorhombic