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<p>In this study, we present an eco-friendly and scalable method for synthesizing ZnO nanoparticles via pulsed laser ablation in liquids. A Nd:YAG laser operating at a wavelength of 532&#xa0;nm was used to ablate high-purity (99.99%) Zn targets immersed in deionized water for 15, 30, and 60&#xa0;min to produce colloidal solutions of ZnO nanoparticles. The morphological, optical, and electrical properties of the laser-synthesized nanoparticles were characterized using several techniques including Fourier transform infrared spectroscopy&#xa0;(FTIR), Raman spectroscopy, transmission electron microscopy&#xa0;(TEM), ultraviolet–visible&#xa0;spectroscopy (UV-Vis), photoluminescence (PL), electrochemical impedance spectroscopy (EIS), and Mott–Schottky analysis (MSA). The average particle size was found to decrease from 36.8 to 27.4 with increasing the ablation time from 15 to 60&#xa0;min due to fragmentation effects resulting from the interaction of the incident laser pulses with the laser-generated particles. A reverse behavior was observed for the energy band gap where it showed an increase from 3.23 to 3.32&#xa0;eV with increasing the ablation time from 15 to 60&#xa0;min. PL spectra exhibited a distinct emission peak around 400&#xa0;nm, indicating the optical properties of the synthesized nanoparticles. MSA and EIS demonstrated an n-type conductivity and enhanced electrical properties of the ZnO with increasing ablation times.</p>

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Effect of ablation time on the optical, morphological, and electrical properties of ZnO nanoparticles synthesized via eco-friendly laser ablation in deionized water

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年6月1日

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  • Abdaluzez A. Abdalaal,
  • Alhamza T. Ayad,
  • Farouk El-Mekawey,
  • Abdelhamid El-Shaer,
  • Mohamed E. Shaheen,
  • Hisham Hashim

摘要

In this study, we present an eco-friendly and scalable method for synthesizing ZnO nanoparticles via pulsed laser ablation in liquids. A Nd:YAG laser operating at a wavelength of 532 nm was used to ablate high-purity (99.99%) Zn targets immersed in deionized water for 15, 30, and 60 min to produce colloidal solutions of ZnO nanoparticles. The morphological, optical, and electrical properties of the laser-synthesized nanoparticles were characterized using several techniques including Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, transmission electron microscopy (TEM), ultraviolet–visible spectroscopy (UV-Vis), photoluminescence (PL), electrochemical impedance spectroscopy (EIS), and Mott–Schottky analysis (MSA). The average particle size was found to decrease from 36.8 to 27.4 with increasing the ablation time from 15 to 60 min due to fragmentation effects resulting from the interaction of the incident laser pulses with the laser-generated particles. A reverse behavior was observed for the energy band gap where it showed an increase from 3.23 to 3.32 eV with increasing the ablation time from 15 to 60 min. PL spectra exhibited a distinct emission peak around 400 nm, indicating the optical properties of the synthesized nanoparticles. MSA and EIS demonstrated an n-type conductivity and enhanced electrical properties of the ZnO with increasing ablation times.