Carbonate, Disordered, Electronic energy gap

• Ba-C-Ca-Cu-O
• C-H-K-O
• Al-C-H-Na-O-Si
• C-Ca-F-Na-O
• C-Ca-Cs-Na-O
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• disordered
• chalcogen
• carbonate
• alkaline
• hexagonal
• tetragonal
• trigonal
• monoclinic
• orthorhombic