Chalcogen, Disordered, Silicate, Electronic energy gap, Si

• Al-H-Na-O-Si
• Al-H-Mg-O-Si
• O-Si
• Al-Ca-H-O-Si
• Al-K-O-Si
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• thermal energy gap
• exciton energy
• silicate
• metalloid
• disordered
• chalcogen
• monoclinic
• orthorhombic
• cubic
• trigonal
• hexagonal