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<p>This study investigates the synthesis of zinc oxide (ZnO) nanomaterials with diverse morphologies using the hydrothermal method and with-without various capping agents viz. L-ascorbic acid, citric acid, oxalic acid and adipic acid. The synthesized ZnO powders exhibited a hexagonal wurtzite structure and varied morphologies, including nanoparticles, jigsaw-like structures, nanochain bunches, and meshes-like patterns. BET analysis revealed that the surface area varied depending on the morphologies ranging from 14 to 26 m<sup>2</sup>&#xa0;g<sup>−1</sup>.The synthesized ZnO has been used as a dye-sensitized solar cell application photoanode. Notably, the nanochain bunch morphology, achieved through oxalic acid-assisted synthesis, demonstrated the highest performance, with a short-circuit current density (J<sub>SC</sub>) of 6.35&#xa0;mA/cm<sup>2</sup> and a cell efficiency of 1.82%. The primary reason for the improved cell performance is attributed to the increased surface area, which enhances dye adsorption, as well as facilitated electron transport due to the interconnected network. This comparative study highlights the influence of capping agents and the resulting morphologies on surface area, recombination kinetics, and overall solar cell performance.</p>

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Effect of capping agents on ZnO nanostructures as a photoanode for dye-sensitized solar cells application

  • 期刊论文

  • 发表日期：

    2025年6月28日

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  • Manisha Chaskar,
  • Vishal Kadam,
  • Sandesh Jadkar,
  • Parag Adhyapak

摘要

This study investigates the synthesis of zinc oxide (ZnO) nanomaterials with diverse morphologies using the hydrothermal method and with-without various capping agents viz. L-ascorbic acid, citric acid, oxalic acid and adipic acid. The synthesized ZnO powders exhibited a hexagonal wurtzite structure and varied morphologies, including nanoparticles, jigsaw-like structures, nanochain bunches, and meshes-like patterns. BET analysis revealed that the surface area varied depending on the morphologies ranging from 14 to 26 m2 g−1.The synthesized ZnO has been used as a dye-sensitized solar cell application photoanode. Notably, the nanochain bunch morphology, achieved through oxalic acid-assisted synthesis, demonstrated the highest performance, with a short-circuit current density (JSC) of 6.35 mA/cm2 and a cell efficiency of 1.82%. The primary reason for the improved cell performance is attributed to the increased surface area, which enhances dye adsorption, as well as facilitated electron transport due to the interconnected network. This comparative study highlights the influence of capping agents and the resulting morphologies on surface area, recombination kinetics, and overall solar cell performance.