Figure 5. Direct-to-indirect band gap transition of the Si(111)n/Si(SC) superlattices.
The lowest conduction band energies at the Γ, , and
points are plotted as a function of n and compared with that of c-Si (horizontal dotted line).
The lowest conduction band energies at the Γ, , and
points are plotted as a function of n and compared with that of c-Si (horizontal dotted line).