Alkaline, Chalcogen, Optical properties, Orthorhombic

• Ba-Cu-O-Y
• Ca-La-Mn-O
• O-Ru-Sr
• Bi-Ca-Cu-O-Sr
• Cu-La-O-Sr
• luminescence
• phonons
• optical spectra
• wavelength for luminescence
• photoluminescence spectra
• alkaline
• chalcogen
• transitional
• oxide
• rare earth