Abstract
We used (001)-oriented silicon wafers, chemically etched under special conditions, as substrates for laser epitaxy of HgCdTe. Three types of Si surface with different microrelief were obtained: flat, pyramid-like and plate-like. Thin films of HgCdTe were deposited using a YAG:Nd 3+ laser. The electrical properties of the structures under investigation were analysed on the basis of current–voltage characteristics. These characteristics are interpreted in relation to the structural properties of the Si substrate surface. The carrier transport mechanisms for different HgCdTe/Si interfaces are presented.
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