IRAQI JOURNAL OF APPLIED PHYSICS Vol. 22, No. 3, July-September 2026, pp. 462-472 Influence of Lithium Salts on Ahmad A. Hasan 1 Optical Properties, FTIR Analysis, Bushra A. Hasan 1 Bushra H. Musa 2 and AC Conductivity of PVP/PVA Khaleel I. Hassoon 2*...
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IRAQI JOURNAL OF APPLIED PHYSICS Vol. 22, No. 3, July-September 2026, pp. 462-472 Influence of Lithium Salts on Ahmad A. Hasan 1 Optical Properties, FTIR Analysis, Bushra A. Hasan 1 Bushra H. Musa 2 and AC Conductivity of PVP/PVA Khaleel I. Hassoon 2* Blends for Solid Polymer Electrolyte Applications Blends of polyvinyl pyrrolidone (PVP) and polyvinyl alcohol (PVA) in equal weight ratios (50 wt.% PVP + 50 wt.% PVA) were doped with 15% of various lithium salts (Li2CO3, LiNO3, Li2SO4H2O, and LiCl) and prepared using the solution-casting method, with dimethylformamide (DMF) as the solvent. The impact of these salts on the blends was analyzed and the results showed that the energy gap was decreased by adding lithium salts Li2CO3, LiNO3 and Li2SO4.H₂O. The minimum energy gap value was 3.5 * Corresponding author email: eV obtained from PVP/PVA:15% Li2CO3. The optical constants were determined in q the range of 300-1100 nm. The results showed that all the optical constants for doped blends we
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