2m 0 T2F3/2dc
C 2' f exp(c)
S+Y /koT, C12 dc f (-Y)nl Co ide1
f(+'y) ,rk0 ex p-(d + -/"___ ex.(1)
e'poc) (A-B')1/2 /koT (£I
(2.18)
(A+B') /2f2(+Y) f/k°T T223/2exp(-c)dc +
(A-B')1/2f2(-Y)n1 f 0 T 2 2 13/2exp(-I )dc1 /koT 1 H2co E 3/2d c F f(+ ) f /koT C d c
e x, epT-) _B 1 )3/2-exp(c) V o L(A+' 032
f (-Y)Tql o 001 l .1(2 19
(A-B')3/2 i/ e x pT Fl) y
where c1 c - A/3ko0T, C,= A/3, q, exp(-A/3ko0T) and A and are defined in Figure 2.1.
In this case because equations (2.11) through (2.13) were
expressed in terms of partial Fermi-Dirac integrals and equations (2.6), (2.9') and (2.10) were expressed in terms of complete Fermi-Dirac integrals, the dependence on T does not cancel out. Thus the nonparabolicity of the light-hole band introduces a dependence on the scattering relaxation time. The scattering relaxation time is discussed in Chapter III.