采用spiro-OMeTAD + CNTs作为空穴传输层的卤化铅钙钛矿太阳能电池的光伏性能提升

Methyl ammonium lead halide (MAPbX 3 )-based perovskite solar cells (PSCs) have garnered extensive interest due to their potential for high-efficiency photovoltaic applications. Particularly, MAPbI 3 has been widely utilized as a light-absorbing material in PSC fabrication. However, the long-term stability of MAPbI 3 -based PSCs remains a significant challenge. In this study, we report the fabrication of MAPbI 3 -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/cm 2 . 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.