Analysis of Electrical and Capacitance–Voltage of PVA/nSi

The present study examined polyvinyl alcohol, PVA, in its pure form without any additives. We investigated its application as a Schottky barrier device, which demonstrates the novelty of this research. We report the synthesis, current–voltage (I–V) and capacitance–voltage (C–V) characteristics, dielectric properties, x-ray diffraction of PVA/nSi. Several parameters, including the ideality factor (n), series resistance (R_s), barrier height (Φ_b), the saturation current (I₀), and shunt resistance (R_sh) were estimated. It was found that the n values decrease with increasing temperature, setting the enhancement of the device features. (Φ_b) values tend to increase with temperature rise. Frequency, voltage and temperature dependence of electric modulus ((\( M^{\prime}\& M^{\prime\prime} \)) was investigated, showing that \( \left( {M^{\prime}} \right) \) decreases with temperature (T) while the values of \( (M^{'} \)) are increased with frequency (f). But at low frequencies \( (M^{'} ) \,{\text{rises }}\,{\text{when }}\, T\, {\text{is }}\,{\text{raised}}. \,{\text{While }} \) (\( M^{\prime\prime}) \) tends to be reduced with increasing T at (f) = 10 and 10³ Hz, with increases at (f) = 2 × 10⁷ Hz. We observed semicircles in the Cole–Cole plots where the radii of curvature increased with temperature and voltage.

I–V characteristic at different temperatures (298–423 K)