Electronic energy gap, O-Pr, Tetragonal

• Cu-O-Pr-Sr-Tl
• Ga-O-Pr-Sr
• Ba-Cu-Fe-O-Pr
• Cl-O-Pr
• Mo-O-Pr
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• charge-transfer energy
• rare earth
• lanthanoid
• chalcogen
• oxide