Abstract
The composition dependence of optical properties and electrical conduction parameters for pristine and annealed Sn–Sb–Se films has been studied in detail. The anomalous variation in the optical and electrical parameters at x=10, shows the occurrence of the rigidity percolation threshold (RPT) for the present system. The annealing causes a decrease in the surface roughness with the nucleation of globular-shaped structures which enhances the disorder has been discussed. The normal and inverse Meyer–Neldel rule has been observed between the dc activation energy (ΔE) and pre-exponential factor (σo) for pristine and annealed samples, respectively.
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