Electronic energy gap, Ge-Si, Ge-x polyhedra

• Gd-Ge-Si
• Ge-O-Si
• Ba-Cu-Ge-Si
• Dy-Gd-Ge-Si
• values of electronic energy gap
• energy gap for direct transition
• energy gap for indirect transition
• temperature derivative of energy gap
• thermal energy gap
• metalloid
• disordered
• silicide
• conductor
• cubic
• orthorhombic
• monoclinic
• tetragonal
• hexagonal