Electroluminescence and UV Characterization of CuO/PS Nanocomposites for Optoelectronic Applications
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Abstract
The development of polymer-based nanocomposites with tailored electrical and optical properties is crucial for advanced optoelectronic applications. In this study, copper oxide (CuO) nanoparticles were synthesized via the sol–gel method and incorporated into a polystyrene (PS) matrix at varying concentrations (1 wt%, 3 wt%, and 5 wt%). The electroluminescent behavior was evaluated using voltage–brightness measurements, while voltage–current analysis assessed electrical conductivity across different frequencies. UV–Visible spectroscopy investigated optical absorption and band gap modulation. Results indicate that the 5 wt% CuO/PS nanocomposite exhibited superior performance, with a low turn-on voltage, high brightness (90 a.u. at 290 V), enhanced current conduction, strong UV absorption in 200–350 nm, and a reduced optical band gap 3.8 eV. These findings confirm that CuO/PS nanocomposites are promising candidates for LEDs, UV photodetectors, optical filters, and high-frequency optoelectronic devices.
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References
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