Alkali, Non-disordered, Transitional, Energy gap for indirect transition

• Au-Cs
• Cl-K-Zn
• Cu-K-S-Sb
• Bi-Na-O-W
• K-Nb-O
• transitional
• non-disordered
• alkali
• ternary
• tetragonal
• trigonal
• cubic
• orthorhombic
• monoclinic