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<p>Methyl ammonium lead halide (MAPbX<sub>3</sub>)-based perovskite solar cells (PSCs) have garnered extensive interest due to their potential for high-efficiency photovoltaic applications. Particularly, MAPbI<sub>3</sub> has been widely utilized as a light-absorbing material in PSC fabrication. However, the long-term stability of MAPbI<sub>3</sub>-based PSCs remains a significant challenge. In this study, we report the fabrication of MAPbI<sub>3</sub>-based PSCs using three different hole transport materials (HTMs): P3HT, PTAA, and spiro-OMeTAD, with the incorporation of carbon nanotubes (CNTs) as an additive to the HTM. The results demonstrate that the spiro-OMeTAD + CNTs HTM-based PSCs exhibit superior photovoltaic performance, achieving a power conversion efficiency (PCE) of 12.49%, with an open-circuit voltage (Voc) of 0.97&#xa0;V, a fill factor (FF) of 0.67, and a short-circuit current density (Jsc) of 19.22&#xa0;mA/cm<sup>2</sup>. Additionally, the spiro-OMeTAD + CNTs HTM-based devices demonstrated enhanced storage stability, maintaining performance for over 720&#xa0;h. These findings suggest that the integration of CNTs with spiro-OMeTAD significantly enhances both the efficiency and stability of PSCs, offering a promising pathway for the development of high-performance, durable perovskite solar cells.</p>

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Improved photovoltaic performance of lead halide perovskite solar cells using spiro-OMeTAD + CNTs as hole transport layer

  • 期刊论文

  • 发表日期：

    2025年3月6日

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  • Khursheed Ahmad,
  • Rais Ahmad Khan

摘要

Methyl ammonium lead halide (MAPbX3)-based perovskite solar cells (PSCs) have garnered extensive interest due to their potential for high-efficiency photovoltaic applications. Particularly, MAPbI3 has been widely utilized as a light-absorbing material in PSC fabrication. However, the long-term stability of MAPbI3-based PSCs remains a significant challenge. In this study, we report the fabrication of MAPbI3-based PSCs using three different hole transport materials (HTMs): P3HT, PTAA, and spiro-OMeTAD, with the incorporation of carbon nanotubes (CNTs) as an additive to the HTM. The results demonstrate that the spiro-OMeTAD + CNTs HTM-based PSCs exhibit superior photovoltaic performance, achieving a power conversion efficiency (PCE) of 12.49%, with an open-circuit voltage (Voc) of 0.97 V, a fill factor (FF) of 0.67, and a short-circuit current density (Jsc) of 19.22 mA/cm2. Additionally, the spiro-OMeTAD + CNTs HTM-based devices demonstrated enhanced storage stability, maintaining performance for over 720 h. These findings suggest that the integration of CNTs with spiro-OMeTAD significantly enhances both the efficiency and stability of PSCs, offering a promising pathway for the development of high-performance, durable perovskite solar cells.