Abstract
A simple and comprehensive theoretical model has been presented for the computation of the electrical conductivity for nanosolids, considering the size, the shape, the relaxation factor and the packing fraction dependent cohesive energy. The computational results for the electrical conductivity obtained through the present model, for CdSe, Bi2S3, Si and Ge semiconducting nanosolids in different shapes demonstrate that the electrical conductivity lowers down as the size of particle decreases. It is also observed that the electrical conductivity of spherical nanoparticle shifts towards tetrahedral shape which indicates that the structure of the nanomaterials also changes at its lower range and hence their electrical property changes accordingly. Our computed results show good agreement with the available experimental findings which authenticates the present comprehensive picture. The present model for electrical conductivity of nano-solids can be applied for the materials in the nano-range which have not been investigated experimentally.
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