Chalcogen, Conductor, Non-disordered, Ternary, Energy gap for direct transition

• Cu-Ga-Se
• Bi-Fe-O
• O-Sr-Ti
• Cu-In-Se
• Cd-Ga-Se
• ternary
• non-disordered
• chalcogen
• conductor
• semiconductor
• tetragonal
• cubic
• orthorhombic
• trigonal
• monoclinic