Borate, Chalcogen, Nonmetal, Hexagonal, Optical properties

• B-Eu-Gd-O-Y
• B-O-Y
• B-O-Tb-Y
• B-Ba-In-O
• B-Ba-F-Na-O
• luminescence
• phonons
• wavelength for luminescence
• values of luminescence
• photoluminescence spectra
• nonmetal
• borate
• chalcogen
• metalloid
• rare earth