fl(y) = (I + 0.01667y + 0.041369y2 + 0.00090679y3
+ 0.00091959y4 +
and
f2 ().= (1 0.01667 + 0.017956Y2 - 0.0069857y3
+ 0.0012610y4 +
Since the heavy-hole band was assumed parabolic, the integrals containing T in equations (2.9) and (2.10) are identical to those in equations (2.12) and (2.13), and cancel out. 2.3.2 The Light-Hole Band
In the light-hole band, as modeled by Figure 2.1, the effective masses of holes are obtained in terms of partial Fermi-Dirac integrals [25]. Thus
2mo3/2 f/k0T
2)*3/2 0 f(+¥) f C_':d c
A-'3/2 f /poT
(A-B') 3/2 /k T jx~ (.7