Chalcogen, Electronic energy gap, Si, Trigonal

• O-Si
• Si-Te
• Ba-Eu-N-O-Si
• Ba-Ga-S-Si
• Al-N-Nd-O-Si
• values of electronic energy gap
• energy gap for indirect transition
• energy gap for direct transition
• pressure derivative of energy gap
• pressure derivative of energy gap for indirect transition
• metalloid
• chalcogen
• disordered
• silicate