Electronic energy gap, O-Pr, Rare earth

• Mo-O-Pr
• O-Pr-Se
• O-Pr-S
• Ba-Mn-O-Pr
• values of electronic energy gap
• energy gap for indirect transition
• thermal energy gap
• energy gap for direct transition
• charge-transfer energy
• rare earth
• lanthanoid
• chalcogen
• oxide
• orthorhombic
• monoclinic
• tetragonal
• cubic
• trigonal