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The complex dielectric functions of (a) two CdS films with indicated values, and (b) the CdTe film along with single crystal CdTe. The major CPs are marked.
The second derivative spectra of complex dielectric functions of (a) the CdS film deposited at , and (b) the CdTe film deposited at . The fits are based on Eq. (1).
Plotted as functions of deposition temperature include: (a) the broadening parameters used to deduce mean free path in polycrystalline CdS and CdTe films; and (b) mean free path results deduced from Eq. (3).
The broadening parameters plotted as functions of the reciprocal of deduced mean free path for (a) CdS and (b) CdTe. The group speeds of excited carriers are calculated from the slopes of the linear fits using Eq. (3).
Processing parameters used in this study. (sccm denotes cubic centimeter per minute at STP).
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