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Fig. 6 The curves have been drawn at terahertz frequency for the normalized Fermi energy versus
concentration in accordance with the Kane model which contains three energy band constants for
Quantum wells of all the materials as taken in Fig. 1
Fig. 7 The curves have been drawn at terahertz frequency for the normalized Fermi energy versus
alloy composition in accordance with the Kane model which contains three energy band constants
for Quantum wells of all the materials as taken in Fig. 2