Abstract
Derivative spectra have been recorded at room temperature to determine the energies at the lowest gap ( E 0) and spin-orbit splitting parameter ( Δ 0) for the electron beam deposited polycrystalline Zn 1− x Cd x Se (0 < x < 1) thin films on glass substrates as a function of composition ( x). The spectra clearly indicated the well resolved transitions due to E 0 and E 0 + Δ 0 gaps. A quadratic relation of E 0 and E 0 + Δ 0 with x is observed, giving respectively the bowing parameters as 0.46 and 0.52 eV. The variation of Δ 0 with x at Γ point is very small and found to be in the range from 0.38 to 0.43 eV.
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