Growth, structure, dielectric and AC conduction properties of solution grown PVA films

New transparent PVA‐InTiO hybrid thin films: influence of InTiO on the structure, morphology, optical, and dielectric properties

“…The observed increase in capacitance with increase of temperature may be due to the expansion of the lattice and excitation of charge carriers present in the imperfection sites. The observed low value of capacitance in the lower temperature region and very high value at higher temperature region is in good agreement with the early reported work in literature . This is the general capacitance behavior normally observed for dielectric materials .…”

“…The growing interest in the choice of material for application as capacitor suggests that the TCC and of dielectrics is to be investigated thoroughly. According to Chandar Shekar et al , and D. Deger et al , the TCC and temperature coefficient of permittivity (TCP) and linear expansion coefficient ( α ) of hybrid thin films have been determined from the capacitance verses temperature and dielectric constant verses temperature plots . The estimated values are presented in the Table .…”

Dopant‐induced microstructural, optical, and electrical properties of TiO2/PVA composite

“…These charge carrier centers are supposed to be the polaron/bipolarons states and the number of these states increases (enhancement in the intensity of CC and CO band observed from FTIR spectra) with doping concentration, as a result the hopping distance for charge carriers decreases. The increase in polaron/bipolarons states lowering the potential barrier between them (by decreasing the hopping distance) and facilitates the charge transfer between the hopping sites . Due to this charge carrier hopping via intrachain one‐dimensional inter polaron sites, the conductivity of the composite films increases with doping level.…”

Improvement of optical, dielectric and mechanical properties of a new nanocomposite based on polyvinyl alcohol and layered double hydroxide

“…9–12 Indeed, the advantage of nanocomposite materials is the possibility of obtaining a wide range of properties depending on the characteristics of the existent phases because the incorporation of inorganic nanoparticles in suitable polymer matrices can improve the optical, mechanical and especially dielectric properties that are mainly governed by the evolution of the dielectric permittivity. 13 The latter is a complex function that depends mainly on the form of heterogeneities, their distribution in the matrix, their concentration and their orientation towards the external electric field.…”