Chalcogen, Oxide, Perovskite, Cubic, Electronic energy gap

• O-Sr-Ti
• Ba-O-Sn
• K-O-Ta
• Ba-O-Sr-Ti
• Ba-O-Ti
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• charge-transfer energy
• thermal energy gap
• oxide
• perovskite
• chalcogen
• transitional