Adamantane, Chalcogen, Isopolyhedral, Electronic energy gap, Tetragonal

• Cu-Ga-Se
• Cu-In-Se
• Cu-Ga-S
• Ag-Ga-Se
• Al-Cu-S
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• exciton energy
• temperature derivative of energy gap
• chalcogen
• isopolyhedral
• adamantane
• transitional
• non-disordered