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<p>In the present work, tin dioxide nanoparticles (SnO<sub>2</sub> NPs) were synthesized using the laser ablation technique and employed in constructing high-performance photodetectors. SnO<sub>2</sub> NPs were prepared using Nd:YAG laser pulses 1064 nm ablated on Sn target immersed in deionized water, and the effect of different laser pulse energies such as 300 mJ, 500 mJ, and 700 mJ on the properties of SnO<sub>2</sub> NPs was investigated. Optical, structural, and electrical characterizations were performed using UV–VIS spectroscopy, XRD, and TEM. The results have shown that SnO<sub>2</sub> NPs ablated at the highest energy produce a good photodetector due to their optimal size, phase, and band gap (<i>E</i><sub>g</sub>). The nanoparticles had a tetragonal rutile phase as confirmed by XRD; the band gap energy gap also increased with low laser energy due to quantum confinement where the energy gap was 4.42 eV, 3.92 eV, and 3.81 eV for 300 mJ, 500 mJ, and 700 mJ, respectively. The photocurrent determined the optoelectronic properties under white light, and the devices belonging to 700 mJ SnO NPs obtained the highest photocurrent density. The spectral responsivity analysis showed that SnO<sub>2</sub>/n-Si photodetectors exhibit three response bands at ~ 363 nm, ~ 660 nm, and ~ 806 nm, regarding the highest responsivity of 0.19 A/W, 0.25 A/W, and 0.37 A/W, respectively. The results demonstrate that laser ablations are a good green and eco-friendly method for SnO<sub>2</sub> NP synthesis suitable for future sustainable energy applications, including renewable energy sources and optical sensing that preserve the environment. This work may suggest that SnO<sub>2</sub> NPs may be applied in self-powered photodetectors and efficient solar energy systems to produce green nanomaterials for future energy applications.</p>

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Synthesis of SnO2 Nanoparticles via Laser Ablation for High-Performance Photodetectors

  • 期刊论文

  • 发表日期：

    2025年4月29日

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  • Mohammed W. Muayad,
  • Uday M. Nayef,
  • Ali J. Hadi,
  • Hudhaifa T. Ali,
  • Adnan M. Hussein,
  • Afrah T. Awad

摘要

In the present work, tin dioxide nanoparticles (SnO2 NPs) were synthesized using the laser ablation technique and employed in constructing high-performance photodetectors. SnO2 NPs were prepared using Nd:YAG laser pulses 1064 nm ablated on Sn target immersed in deionized water, and the effect of different laser pulse energies such as 300 mJ, 500 mJ, and 700 mJ on the properties of SnO2 NPs was investigated. Optical, structural, and electrical characterizations were performed using UV–VIS spectroscopy, XRD, and TEM. The results have shown that SnO2 NPs ablated at the highest energy produce a good photodetector due to their optimal size, phase, and band gap (Eg). The nanoparticles had a tetragonal rutile phase as confirmed by XRD; the band gap energy gap also increased with low laser energy due to quantum confinement where the energy gap was 4.42 eV, 3.92 eV, and 3.81 eV for 300 mJ, 500 mJ, and 700 mJ, respectively. The photocurrent determined the optoelectronic properties under white light, and the devices belonging to 700 mJ SnO NPs obtained the highest photocurrent density. The spectral responsivity analysis showed that SnO2/n-Si photodetectors exhibit three response bands at ~ 363 nm, ~ 660 nm, and ~ 806 nm, regarding the highest responsivity of 0.19 A/W, 0.25 A/W, and 0.37 A/W, respectively. The results demonstrate that laser ablations are a good green and eco-friendly method for SnO2 NP synthesis suitable for future sustainable energy applications, including renewable energy sources and optical sensing that preserve the environment. This work may suggest that SnO2 NPs may be applied in self-powered photodetectors and efficient solar energy systems to produce green nanomaterials for future energy applications.