Borate, Lanthanoid, Metalloid, Hexagonal, Optical properties

• B-Eu-Gd-O-Y
• Al-B-Dy-La-O
• B-Ba-Eu-O
• B-O-Tb-Y
• B-Ba-Eu-Gd-O
• luminescence
• wavelength for luminescence
• photoluminescence spectra
• phonons
• values of luminescence
• metalloid
• chalcogen
• lanthanoid
• borate
• rare earth