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<p>Perovskite solar cells (PSCs) have garnered significant attention in photovoltaics due to their simple fabrication process, low cost, and excellent photovoltaic performance. To enhance the power conversion efficiency (PCE), we designed a PSC incorporating a charge transport layer with a dual inverted pyramid reflectance-reducing structure. The effect of the depth of the inverted pyramid spires on the PCE of PSCs was investigated. The results indicate that introducing the dual inverted pyramid in PSCs with the structure of ITO/PEDOT: PSS/MAPbI<sub>3</sub>/SnO<sub>2</sub>/Ag significantly reduces light reflectivity and enhances light absorption. This structural optimization facilitates better light energy capture, which improves PCE of PSCs. Additionally, the dual inverted pyramid structure increases the interfacial contact area between the light absorption layer and the charge transport layer and shortens carrier transport distances, contributing to improved carrier transport efficiency. The PSCs based on the dual inverted pyramid structure demonstrate outstanding photovoltaic performance, with a maximum short-current density (Jsc) of 26.24&#xa0;mA/cm<sup>2</sup> and a PCE of 24.92%. Compared to the conventional PSCs without the pyramid structure, the Jsc and PCE increased by 16.3% and 11.3%, respectively.</p>

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Utilizing dual inverted pyramid structures to optimize light absorption for significantly enhanced performance of perovskite solar cells

  • 期刊论文

  • 发表日期：

    2025年6月27日

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  • Wang Wang,
  • Enze Quan,
  • Minchen Xie,
  • Lijia Chen

摘要

Perovskite solar cells (PSCs) have garnered significant attention in photovoltaics due to their simple fabrication process, low cost, and excellent photovoltaic performance. To enhance the power conversion efficiency (PCE), we designed a PSC incorporating a charge transport layer with a dual inverted pyramid reflectance-reducing structure. The effect of the depth of the inverted pyramid spires on the PCE of PSCs was investigated. The results indicate that introducing the dual inverted pyramid in PSCs with the structure of ITO/PEDOT: PSS/MAPbI3/SnO2/Ag significantly reduces light reflectivity and enhances light absorption. This structural optimization facilitates better light energy capture, which improves PCE of PSCs. Additionally, the dual inverted pyramid structure increases the interfacial contact area between the light absorption layer and the charge transport layer and shortens carrier transport distances, contributing to improved carrier transport efficiency. The PSCs based on the dual inverted pyramid structure demonstrate outstanding photovoltaic performance, with a maximum short-current density (Jsc) of 26.24 mA/cm2 and a PCE of 24.92%. Compared to the conventional PSCs without the pyramid structure, the Jsc and PCE increased by 16.3% and 11.3%, respectively.