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<p>Developing cost-effective, scalable, and highly sensitive optoelectronic devices is essential for numerous technological applications. This study introduces a novel one-pot synthesis approach to create a highly crystalline plasmonics iodine/intercalated iodide-poly N-methyl pyrrole (I<sub>2</sub>/I-NMP) porous spherical complex nanocomposite. The applied synthesis approach, validated through SEM and TEM characterizations alongside theoretical modeling, facilitates the formation of nanocomposites with a well-developed porous spherical morphology. The particles exhibit average diameters ranging from 200 to 250 nm, with pore sizes around 15 nm. Furthermore, XRD analysis confirms the high crystallinity of the material, with an estimated crystallite size of approximately 12 nm. The incorporation of plasmonic I<sub>2</sub> within the composite was verified using XPS, which revealed two distinct peaks corresponding to molecular iodine (I<sub>2</sub>) and iodide (I<sup>−</sup>) species, confirming their successful integration into the material structure. We systematically investigate the optoelectronic performance of the fabricated nanocomposite, focusing on the visible (Vis) and ultraviolet (UV) regions, highlighting its potential for photodetection applications. Evaluating the photocurrent density (Jph) at an applied voltage of − 2.0 V shows impressive response characteristics. Under photon excitation at 3.6 eV and 2.8 eV, the recorded Jph values are approximately − 0.025 mA·cm<sup>−2</sup> and − 0.023 mA·cm<sup>−2</sup>, respectively. Additionally, the responsivity (<i>R</i>) of the material for these photon energies is estimated at 0.25 mA·W<sup>−1</sup> and 0.23 mA·W<sup>−1</sup>, underscoring its ability to convert incident light into an electrical signal efficiently. The detectivity (<i>D</i>) is determined to be 0.56 × 10⁸ Jones and 0.54 × 10⁸ Jones for the respective photon energies of 3.6 eV and 2.8 eV. These results emphasize the potential of the I<sub>2</sub>/I-NMP porous spherical complex nanocomposite as a highly effective material for optoelectronic applications, especially in photodetectors operating within the UV and visible spectral regions. With superior crystallinity, optimized porosity, and exceptional optoelectronic properties, this nanocomposite is a promising candidate for advanced sensor technologies and energy-efficient electronic devices.</p>

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One-Pot Synthesis of Highly Crystalline Plasmonics Iodine/intercalated Iodide-Poly N-methylPyrrole Porous Spherical Complex Nanocomposite for Optoelectronic Applications

  • 期刊论文

  • 发表日期：

    2025年10月2日

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  • Mohamed Rabia,
  • Amira Ben Gouider Trabelsi,
  • Fatemah H. Alkallas

摘要

Developing cost-effective, scalable, and highly sensitive optoelectronic devices is essential for numerous technological applications. This study introduces a novel one-pot synthesis approach to create a highly crystalline plasmonics iodine/intercalated iodide-poly N-methyl pyrrole (I2/I-NMP) porous spherical complex nanocomposite. The applied synthesis approach, validated through SEM and TEM characterizations alongside theoretical modeling, facilitates the formation of nanocomposites with a well-developed porous spherical morphology. The particles exhibit average diameters ranging from 200 to 250 nm, with pore sizes around 15 nm. Furthermore, XRD analysis confirms the high crystallinity of the material, with an estimated crystallite size of approximately 12 nm. The incorporation of plasmonic I2 within the composite was verified using XPS, which revealed two distinct peaks corresponding to molecular iodine (I2) and iodide (I−) species, confirming their successful integration into the material structure. We systematically investigate the optoelectronic performance of the fabricated nanocomposite, focusing on the visible (Vis) and ultraviolet (UV) regions, highlighting its potential for photodetection applications. Evaluating the photocurrent density (Jph) at an applied voltage of − 2.0 V shows impressive response characteristics. Under photon excitation at 3.6 eV and 2.8 eV, the recorded Jph values are approximately − 0.025 mA·cm−2 and − 0.023 mA·cm−2, respectively. Additionally, the responsivity (R) of the material for these photon energies is estimated at 0.25 mA·W−1 and 0.23 mA·W−1, underscoring its ability to convert incident light into an electrical signal efficiently. The detectivity (D) is determined to be 0.56 × 10⁸ Jones and 0.54 × 10⁸ Jones for the respective photon energies of 3.6 eV and 2.8 eV. These results emphasize the potential of the I2/I-NMP porous spherical complex nanocomposite as a highly effective material for optoelectronic applications, especially in photodetectors operating within the UV and visible spectral regions. With superior crystallinity, optimized porosity, and exceptional optoelectronic properties, this nanocomposite is a promising candidate for advanced sensor technologies and energy-efficient electronic devices.