Paper Title
Electrical Characterization Of Pure And Doped With Ferric Chloride Polyvinyl Alcohol Thin Films
Abstract
Polyvinyl alcohol films of different
thickness and also of 120 micron PVA films doped
with ferric Chloride upto (5%wt) were prepared in
order to investigate the effect of ferric Chloride
addition on the electrical properties of PVA host. The
dielectric permittivity, dielectric loss, and ac
conductivity were studied in the frequency range 100
Hz -100kHz at room temperature about 300
c . The
dielectric permittivity , dielectric loss , and ac
conductivity σ, were determined using the measured
values of capacitance and dissipation factor. It is
found that the value of decreases with increase in
frequency and increases with the film thickness
while dielectric loss shows variation with
frequency ,for ferric Chloride doped films the values
of & vary anomalously with increasing the
content of ferric Chloride .The a.c. conductivity of
pure PVA films increases with the films thickness
and varies almost linearly with frequency further it is
also found that there is a variation in conductivity of
Ferric Chloride doped PVA film with increase in
Ferric Chloride Concentration.The ac conductivity σ
is found to obey the power law Bωs
.The frequency
expoential factor is found to vary between 0.92 and
0.45,dependant on the content of FeCl3.
Keywords: Polymer thin films (PVA), Dielectric
permittivity , Dielectric Loss and a.c
conductivity σ