Effect of barium chloride doping on PVA microstructure: positron annihilation study

A Comparative Study on Electrical Characteristics of Au/N-Si Schottky Diodes, with and Without Bi-Doped PVA Interfacial Layer in Dark and Under Illumination at Room Temperature

“…In recent years, metal/metal doped polymer/semiconductor (MPS) structures, which are known as MPS type Schottky barrier diodes (SBDs), have gained great importance due to their potential applications in the microelectric industry, instead of classic metal/ semiconductor (MS) and metal/insulator/semiconductor (MIS) type SBDs [1][2][3][4][5][6][7][8][9][10][11][12]. MS type SBDs, with a thin interfacial polymer layer, such as polyaniline, poly(alkylthiophene), polypyrrole, polythiophene, poly(3-hexylthiophene) and polyvinyl alcohol (PVA), have been investigated by chemists, physicists, and electrical engineers, as well due to potential applications and interesting properties of these polymers.…”

Synthesis and characterization of multifunctional ZnBr2/PVA polymer dielectrics

“…The dielectric measurements in the frequency range from 4 Hz to 5 MHz have been performed at room temperature and at different temperatures using HIOKI-IM3570 high precession impedance analyzer interfaced to a computer by sandwiching the film samples between two steel electrodes of 1.3 cm diameter. 16 Before measurement, the samples were again dried to reduce the solvent residual effect and the instrument were calibrated with open circuit and closed circuit using standard methods to reduce errors. The capacitance and dielectric loss factors were measured and repeated four to five times for repeatability in the values.…”

The tunable permittivity of multi-walled carbon nanotubes/silver nanoparticles reinforced polyvinyl alcohol (PVA) nanocomposites at low frequency

“…In addition, PVA is a polar polymer where the dipoles entrapped the electrons and caused interfacial polarization with the arrangement of large dipoles on the metal particles [29]. The dielectric behavior of nanocomposites also depends on several factors such as electrode effect, orientation, atomic and electronic polarization [30]. Figure 4 shows the dielectric loss, ε″ of the nanocomposites exhibited decreasing trend with the increase in applied frequency.…”

“…The significant increment in the conductivity and dielectric permittivity of the nanocomposites are ascribed to high physical interactions between polymer chains and the conductive networks of MWNT-AgNP. As the AgNP content increases, there would be a charge transfer complexes (CTC) occurs within amorphous regions of the PVA by reducing the potential barrier of two localized states to allow the transfer of charge carriers [27,30,37]. However, as the content of AgNP increased further up to 1.8 wt%, inducing large pores and metal clouds exist between the MWNT networks and the matrix ( figure 7(d)).…”