Alkaline, Chalcogen, Khanna

• Ca-Eu-Mo-O
• Ca-Eu-O-W
• Ba-Cl-O
• Ba-Cl-H-O
• Ca-O-W
• optical properties
• luminescence
• wavelength for luminescence
• photoluminescence spectra
• electronic and electrical properties
• alkaline
• chalcogen
• transitional
• luminescent
• rare earth
• tetragonal
• monoclinic
• orthorhombic
• cubic