Polymer-based nanocomposites for bolometric applications

Tunable electrophysical properties of composites nano-CdS/polyvinyl alcohol

“…This relaxation takes a rather long time, approximately several minutes, similar to the observations reported in Refs. [18,20]. Taking into account PVA's known polarization behavior in an electric field, the resistance of the sample was measured after the stabilization of the current in the circuit.…”

“…According to Ref. [18], the conductivity of the composite at low fields is linear and changes to quadratic currentevoltage dependence at higher fields. This behavior is interpreted as the transition from the ohmic regime to the regime of the injection by space-charges-limited currents.…”

“…Electrical properties of polymers loaded with semiconductor nanoparticles attracted much less attention; namely, the results for composites CdS/PVA were reported in Refs. [17,18]. The conclusions of these papers are to some extent contradictory.…”

“…A nano-composite material is expected to exhibit the combined properties of its components or even enhanced properties as compared to its components [ [8] and references therein]. For example, previous studies of the nano-CdS/polyvinyl alcohol composite have revealed new optical [9e12] and electrical [17,18] properties.…”