Dielectric properties and AC conduction mechanism for 5,7-dihydroxy-6-formyl-2-methylbenzo-pyran-4-one bis-schiff base

Electrical transport properties and modulus behavior of the organic–inorganic [N(C3H7)4]2SnCl6 compound

“…Whereas when s decreases with increasing temperature the correlated barrier hopping (CBH) model is the predominant mechanism [26]. Observing Figure 7, it becomes clear that s has a value less than the unity and decreases with the increase of temperature indicating that the correlated barrier hopping model (CBH) is applicable to this sample.…”

Electrical characteristics of Li(Ni7/10Fe3/10)VO4 ceramics

“…It indicates a progressive rise in ac on increasing temperature, which signifies electrical conduction in the material as a thermally activated process. This pattern of variation obeys a relation [ ac = o exp(−E a /kT)], where o is the pre-exponential factor, E a is the activation energy, k is the Boltzmann constant and T is the absolute temperature [41]. It is observed that the value of E a decreases with rise in frequency, which is due to the enhancement of electronic jumps between localized states.…”

Nano-flower 2,3-naphthalocyanine heterojunction for optoelectronic applications

“…Therefore, the frequency dependence of electrical conductivity can be explained in terms of the CBH model. This model was applied for various organic compounds [10,28,29]. According to this model, the conduction occurs by means of a bipolaron hopping process where two polarons simultaneously hop over the potential barrier between two charged defect states D + and D À and the barrier height is correlated with the inter-site separation via a Coulombic interaction at lower temperature [30].…”