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<p>In recent years, significant research has focused on photocatalytic studies for dye removal in textile industries and waste water treatment, cyclic voltammetry (CV) for supercapacitor applications, and nonlinear optical (NLO) investigations for optoelectronic and laser-based technologies. Accordingly, the present study explores these aspects in Neodymium Sulfate Octahydrate (NSO) crystals. NSO crystals were successfully grown via a solution growth method over a 32-day period. Single-crystal X-ray diffraction (SXRD) analysis confirmed that the grown NSO crystal crystallizes in the monoclinic system with the following lattice parameters: <i>a</i> = 13.611(3) Å, <i>b</i> = 6.826(2) Å, <i>c</i> = 18.392(9) Å, <i>α</i> = 90°, <i>β</i> = 102.56(3)°, and <i>γ</i> = 90°. Powder X-ray diffraction (PXRD) was employed to determine the Miller indices (hkl) of the diffraction peaks. Photoconductivity analysis revealed that the material exhibits negative photoconductivity (NPC), as the photocurrent was slightly lower than the dark current. For optoelectronic and NLO device applications, cyclic voltammetry, and third-order nonlinear optical studies were conducted. CV measurements showed a maximum specific capacitance of 241.181 F/g at a scan rate of 10&#xa0;mV/s, indicating potential for supercapacitor applications. Photoluminescence (PL) analysis demonstrated strong green fluorescence emission, highlighting its optical activity. The third-order NLO response revealed a nonlinear susceptibility value of 4.04616 × 10<sup>–8</sup> esu, with a negative nonlinear refractive index. To the best of our knowledge, this is the first report presenting the multifunctional properties of NSO single crystals for potential industrial and photonic applications.</p>

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Optical, electrical, and third harmonic generation studies of neodymium sulfate octahydrate single crystals

  • 期刊论文

  • 发表日期：

    2025年11月12日

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  • S. Usha,
  • P. Selvarajan,
  • S. Lincy Mary Ponmani,
  • B. Sahaya Infant Lasalle,
  • Muthu Senthil Pandian

摘要

In recent years, significant research has focused on photocatalytic studies for dye removal in textile industries and waste water treatment, cyclic voltammetry (CV) for supercapacitor applications, and nonlinear optical (NLO) investigations for optoelectronic and laser-based technologies. Accordingly, the present study explores these aspects in Neodymium Sulfate Octahydrate (NSO) crystals. NSO crystals were successfully grown via a solution growth method over a 32-day period. Single-crystal X-ray diffraction (SXRD) analysis confirmed that the grown NSO crystal crystallizes in the monoclinic system with the following lattice parameters: a = 13.611(3) Å, b = 6.826(2) Å, c = 18.392(9) Å, α = 90°, β = 102.56(3)°, and γ = 90°. Powder X-ray diffraction (PXRD) was employed to determine the Miller indices (hkl) of the diffraction peaks. Photoconductivity analysis revealed that the material exhibits negative photoconductivity (NPC), as the photocurrent was slightly lower than the dark current. For optoelectronic and NLO device applications, cyclic voltammetry, and third-order nonlinear optical studies were conducted. CV measurements showed a maximum specific capacitance of 241.181 F/g at a scan rate of 10 mV/s, indicating potential for supercapacitor applications. Photoluminescence (PL) analysis demonstrated strong green fluorescence emission, highlighting its optical activity. The third-order NLO response revealed a nonlinear susceptibility value of 4.04616 × 10–8 esu, with a negative nonlinear refractive index. To the best of our knowledge, this is the first report presenting the multifunctional properties of NSO single crystals for potential industrial and photonic applications.