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Table 4 QSGW bandgaps for Γ and R in ordered (GaAs)1 xGe2x alloys

From: On the Chemical Origin of the Gap Bowing in (GaAs)1−xGe2x Alloys: A Combined DFT–QSGW Study

  Г R
GaAs 1.66 1.80
I (x = 0.25) 0.61 0.20
IIa (x = 0.5) 0.16 0.41
IIb <0 <0
III (x = 0.75) 0.23 0.18
Ge 1.04 0.74