Cubic, Electronic energy gap, O-Si, Silicate

• Al-H-Na-O-Si
• Al-Cs-K-O-Si
• Al-Ca-H-O-Si
• Ag-Al-H-O-Si
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• metalloid
• silicate
• chalcogen
• disordered