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Fig. 6 The curves of C 2 versus carrier degeneracy under terahertz frequency in CdS where (a) ¯
λ 0 =
0 (b) ¯
λ 0 = 0
Fig. 7 The curves of C 1 versus carrier degeneracy under terahertz frequency in n-Indium Antimonide for (a) the band structure contains 3 energy band constants, (b) the band structure contains
2 energy band constants and (c)where the band structure defined by a single energy band constant
band constants and (c) where the band structure defined by a single energy band
constant, respectively. From Figs. 7, 8, 9 and 10, we note that C 1 increases with
decreasing carrier degeneracy. Figures 11 and 12 exhibit the variations of C 1 versus
x in ternary and quaternary materials for (a) the band structure contains 3 energy band
constants (b) the band structure contains 2 energy band constants and (c) where the