Karpovich

• Ga-Se-Tl
• Ba-F-Gd
• Ba-F-La
• Ba-F-Y
• Ba-F
• structural properties
• electronic and electrical properties
• optical properties
• optical absorption
• photo-conductivity data
• chalcogen
• ternary
• disordered
• semiconductor
• nonmetal
• monoclinic
• cubic