Alkali, Chalcogen, Electronic energy gap, Tetragonal

• K-Nb-O
• I-Na-O
• Fe-K-Se
• F-Na-O-P-V
• Al-H-Na-O-Si
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• thermal energy gap
• spin-orbit splitting of valence band
• alkali
• chalcogen
• transitional
• disordered