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<p>A single crystal of MgCl<sub>2</sub>-doped L-HTFB was effectively synthesized via the slow evaporation of solvent technique. Both single-crystal and PXRD analyses confirmed that MgCl<sub>2</sub>-doped L-HTFB crystallizes in a monoclinic system with a centrosymmetric space group <i>P</i>2₁. The FTIR spectrum analysis confirmed the existence of distinct functional groups in the crystal. Ultraviolet–Visible (UV–Vis) spectroscopy revealed excellent transparency across the 190–1100&#xa0;nm range and facilitated the determination of essential linear optical parameters, including the band gap, extinction coefficient, and refractive index. Dielectric measurements performed over a range of frequencies revealed low dielectric constant and dielectric loss values at higher frequencies, suggesting that the MgCl<sub>2</sub>-doped L-HTFB crystal is an auspicious contender for NLO applications. The mechanical properties&#xa0;of the MgCl<sub>2</sub>-doped L-HTFB crystal was evaluated through Vickers microhardness analysis. These results demonstrate the suitability of the material for 2nd order NLO applications.</p>

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Synthesis, growth, and characterizations of MgCl2-doped L-HTFB single crystal for optoelectronic applications

  • 期刊论文

  • 发表日期：

    2026年7月9日

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  • T. Rasappan,
  • C. Besky Job,
  • B. Sahaya Infant Lasalle,
  • Muthu Senthil Pandian,
  • C. Justin Dhanraj,
  • P. Selvarajan

摘要

A single crystal of MgCl2-doped L-HTFB was effectively synthesized via the slow evaporation of solvent technique. Both single-crystal and PXRD analyses confirmed that MgCl2-doped L-HTFB crystallizes in a monoclinic system with a centrosymmetric space group P2₁. The FTIR spectrum analysis confirmed the existence of distinct functional groups in the crystal. Ultraviolet–Visible (UV–Vis) spectroscopy revealed excellent transparency across the 190–1100 nm range and facilitated the determination of essential linear optical parameters, including the band gap, extinction coefficient, and refractive index. Dielectric measurements performed over a range of frequencies revealed low dielectric constant and dielectric loss values at higher frequencies, suggesting that the MgCl2-doped L-HTFB crystal is an auspicious contender for NLO applications. The mechanical properties of the MgCl2-doped L-HTFB crystal was evaluated through Vickers microhardness analysis. These results demonstrate the suitability of the material for 2nd order NLO applications.