Regensburg 2025 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 63: Focus Session: Nanoscale Light-matter Interaction II
HL 63.2: Vortrag
Freitag, 21. März 2025, 12:15–12:30, H14
Optical and Electrical Properties of Copper Oxide * Polyvinyl Alcohol Nanocomposites for Solar Cell Applications — •Ahed AL-Faouri1,2, Mahmoud Abu-Kharma1, and Mahmoud Hatem1 — 1Department of Physics, Faculty of Science, Al-Balqa Applied University, Al-Salt, Jordan — 2Basic Sciences Department, Faculty of Arts and Sciences, Al-Ahliyya Amman University, Amman, Jordan
Copper oxide nanoparticles (CuO-NPs) were successfully synthesized at ambient temperature using an easy and eco-friendly method, employing the aqueous extract of bougainvillea leaves as reducing and stabilizing agents. First, a thin film of pure polyvinyl alcohol (PVA) was prepared via solution casting. Subsequently, four CuO-PVA nanocomposites were fabricated through solution casting at concentrations of (13, 30, 40, and 51) wt%. The optical and electrical properties of the synthesized CuO NPs, pure PVA, and CuO-PVA thin films were investigated using a UV-Vis spectrophotometer and a Keithley electrometer.
The band gap (Eg) of prepared CuO-NPs was 2.74 eV. The separation of this band gap renders CuO-NPs a suitable material for solar energy conversion and could potentially be used as an active layer material in solar cells., Furthermore, the four prepared CuO-PVA showed that the optical band gap decreased from 4.42 eV (pure PVA) to 3.34 eV (50%CuO-PVA). Further, increased DC electric conductivity was observed
Keywords: CuO-PVA nanocomposite; Optical band gap; Optical absorption; Electrical conductivity; Solar cell