Abstract
The coherent potential approximation (CPA) within the tight binding Slater-Koster scheme is briefly reviewed as a theoretical tool for the study of the electronic properties of amorphous semiconductor hydrides.
Basic quantities of interest include the density of electronic states, the optical absorption, and the DC and AC conductivities. The optical gap, as well as other quantities of interest are obtained as a function of hydrogen and semiconductor concentrations.
The overall agreement with experimental measurements is very good.
Recent theoretical developments allow the incorporation of corrections beyond the CPA.
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Zdetsis, A.D. (1986). A CPA Description of the Electronic and Transport Properties of α-GeH, α-SiH and α-SiGeH. In: Bambakidis, G., Bowman, R.C. (eds) Hydrogen in Disordered and Amorphous Solids. NATO ASI Series, vol 136. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2025-6_4
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DOI: https://doi.org/10.1007/978-1-4899-2025-6_4
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