Abstract
A sol–gel method (colloidal route) based on V2O5.nH2O hydrogel was developed to synthesize xFeCl3-(80-x)V2O5-20MoO3.nH2O (0.5 ≤ x ≤ 3 mol.%) material. X-ray diffraction (XRD), transmission electron microscopy (TEM), density, thermoelectric power, and electrical properties of the films as prepared were investigated. X-ray diffraction and transmission electron microscopy were used to identify the structure of the obtained nanocrystals. Homogenous nanocrystals of 40 nm in size were obtained. Electrical conductivity and thermoelectric power were measured in the temperature range 385–500 K for the as-prepared films. The electrical conductivity increased with increasing FeCl3content. The obtained results showed by increasing FeCl3content in the system under investigation, gradual changes in thermoelectric power from n-type to p-type were detected. The sol–gel method is fit for the preparation of x FeCl3-(80-x)V2O5-20MoO3.nH2O material which may offer some favorable properties for commercial application.
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