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<p>In this paper, we present a novel approach to enhancing the visible light photodetection efficiency of reduced graphene oxide (rGO) by incorporating polypyrrole (Ppy) nanoparticles sized between 126 nm and 1 025 nm. The rGO and Ppy nanoparticles were synthesized via Hummer’s method and chemical polymerization, respectively. Characterization was performed using scanning electron microscope (SEM), transmission electron microscope (TEM), Raman spectroscopy, and optical measurements. The rGO/Ppy photodetector demonstrated a high photoresponsivity of 15 mA/W and a broad spectral response from 405 nm to 805 nm, indicating improved efficiency and versatility. This study high-lights the potential of tailored Ppy nanoparticle sizes in advancing rGO photodetectors for high-performance optoelectronic applications.</p>

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Enhanced visible light photodetection based on the solution-processed rGO-Ppy photodetectors

  • 期刊论文

  • 发表日期：

    2025年9月25日

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  • Ali Jabbar Fraih,
  • Shaymaa Saadoon Hashim,
  • Salman Rasool Salman

摘要

In this paper, we present a novel approach to enhancing the visible light photodetection efficiency of reduced graphene oxide (rGO) by incorporating polypyrrole (Ppy) nanoparticles sized between 126 nm and 1 025 nm. The rGO and Ppy nanoparticles were synthesized via Hummer’s method and chemical polymerization, respectively. Characterization was performed using scanning electron microscope (SEM), transmission electron microscope (TEM), Raman spectroscopy, and optical measurements. The rGO/Ppy photodetector demonstrated a high photoresponsivity of 15 mA/W and a broad spectral response from 405 nm to 805 nm, indicating improved efficiency and versatility. This study high-lights the potential of tailored Ppy nanoparticle sizes in advancing rGO photodetectors for high-performance optoelectronic applications.