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<p>This work utilizes lanthanum hexaboride (LaB<sub>6</sub>) as an antireflection coating material (ARC) material on monocrystalline silicon solar cell and it is synthesized by sol–gel method. The spin coating technique is used to deposit LaB<sub>6</sub> films on the PV cells. The LaB<sub>6</sub> thin films were uniformly deposited on the coating surface at various coating intervals i.e., 40 (LB1), 80 (LB2), 120 (LB3) and 160 (LB4) seconds. The various characterization methods including XRD, AFM, HRTEM, FESEM, and EDX has been implemented to analyze the crystal structure, surface roughness, particle dimensions, coating thickness and chemical composition of LaB<sub>6</sub> coated solar cells, respectively. The absorbance spectra of LaB<sub>6</sub> coated cells were analyzed using UV–vis-NIR spectroscopy to evaluate its optical characteristics. The XRD data reveal that the synthesis of LaB<sub>6</sub> exhibiting a higher level of purity. The AFM investigation demonstrates that specimen coated for 160&#xa0;s (LB4) exhibits maximum roughness (74.29&#xa0;nm) compared to other coated specimens. The LB3 coated specimen achieved a highest PCE of 21.0% and 23.6% in open and stimulated light conditions. Additionally, the LB3 specimen had a minimum electrical resistivity of 4.05 × 10<sup>−3</sup> Ω-cm. The results demonstrated that lanthanum hexaboride could be a suitable AR material for reducing the photon dispersion and increasing the performance of solar PV panels.</p>

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High-efficiency monocrystalline silicon solar cells via optimized LaB6 antireflection coatings synthesized by sol–gel technique

  • 期刊论文

  • 发表日期：

    2025年11月4日

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  • Manojkumar Aruchamy,
  • Gobinath Velu Kaliyannan,
  • Raja Gunasekaran,
  • Mohankumar Subramanian

摘要

This work utilizes lanthanum hexaboride (LaB6) as an antireflection coating material (ARC) material on monocrystalline silicon solar cell and it is synthesized by sol–gel method. The spin coating technique is used to deposit LaB6 films on the PV cells. The LaB6 thin films were uniformly deposited on the coating surface at various coating intervals i.e., 40 (LB1), 80 (LB2), 120 (LB3) and 160 (LB4) seconds. The various characterization methods including XRD, AFM, HRTEM, FESEM, and EDX has been implemented to analyze the crystal structure, surface roughness, particle dimensions, coating thickness and chemical composition of LaB6 coated solar cells, respectively. The absorbance spectra of LaB6 coated cells were analyzed using UV–vis-NIR spectroscopy to evaluate its optical characteristics. The XRD data reveal that the synthesis of LaB6 exhibiting a higher level of purity. The AFM investigation demonstrates that specimen coated for 160 s (LB4) exhibits maximum roughness (74.29 nm) compared to other coated specimens. The LB3 coated specimen achieved a highest PCE of 21.0% and 23.6% in open and stimulated light conditions. Additionally, the LB3 specimen had a minimum electrical resistivity of 4.05 × 10−3 Ω-cm. The results demonstrated that lanthanum hexaboride could be a suitable AR material for reducing the photon dispersion and increasing the performance of solar PV panels.