Abstract:
Electrical d.c. conductivity of nano-CdS/polyvinyl alcohol composites with different nanoparticle concentrations
and its temperature dependence were studied. The composites demonstrate increasing
resistivity with CdS nanoparticles content. The currentevoltage characteristics of composites exhibit
non-ohmic superlinear behavior that is interpreted in terms of space-charges-limited currents. Temperature
dependence of resistivity is characterized by high temperature coefficient of resistivity which is
favorable for applications in flexible, easy-to-shape thermistors. The tunability of the thermal sensitivity
of CdS/polyvinyl alcohol composites was analyzed.
