Ketterson

• Pt-U
• As-Na-Se
• As-Li-Na-Se
• Ba-Cu-O-Y
• As-Li-Se
• optical properties
• electronic and electrical properties
• phonons
• Raman spectra
• electronic energy gap
• conductor
• chalcogen
• semiconductor
• transitional
• metalloid
• monoclinic
• orthorhombic
• cubic
• tetragonal
• hexagonal