Scholarlink

<p>Tandem solar cells, capable of absorbing a broader range of the solar spectrum, offer enhanced power conversion efficiency (PCE) compared to single-junction solar cells. This study presents the optimization and performance analysis of a monolithic two-terminal all-perovskite tandem solar cell using the SCAPS-1D simulation tool. The tandem architecture comprises a wide-bandgap top cell with Cs<sub>0.05</sub>(MA<sub>0.23</sub> FA<sub>0.77</sub>)<sub>0.95</sub> Pb (Br<sub>0.23</sub> I<sub>0.77</sub>)<sub>3</sub> (E<sub>g</sub>= 1.68&#xa0;eV) and a narrow-bandgap bottom cell with CH<sub>3</sub>NH<sub>3</sub>SnI<sub>3</sub> (E<sub>g</sub> = 1.3&#xa0;eV) as active absorber layers. The study systematically investigates the effects of absorber thickness, charge transport layer thicknesses, operational temperature, and back contact work function on the photovoltaic performance of each sub-cell under standalone conditions. Subsequently, the optimized sub-cells are integrated into a tandem configuration. The top cell is simulated under the standard AM1.5G spectrum, while the bottom cell is analyzed under both the full AM1.5G and the filtered spectrum transmitted through the top cell. To achieve the required current-matching condition in the tandem design, the perovskite absorber thicknesses of the top and bottom cells are carefully optimized. A matched short-circuit current density (J<sub>SC</sub>) of approximately 16.0&#xa0;mA/cm² is obtained with absorber layer thicknesses of 150&#xa0;nm for the top cell and 700&#xa0;nm for the bottom cell, respectively. The optimized tandem device demonstrates an open-circuit voltage (V<sub>OC</sub>) of 2.34&#xa0;V, a fill factor (FF) of 80.49%, and an impressive overall PCE of 30.13%, significantly surpassing conventional single-junction solar cells and many previously reported tandem structures. These findings underscore the potential of all-perovskite tandem architectures for next-generation high-efficiency photovoltaics.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Performance engineering of two-terminal all-perovskite tandem solar cells via SCAPS-1D simulations

  • 期刊论文

  • 发表日期：

    2026年3月31日

查看全文
  • Nishant Agarwal,
  • Tushar Agarwal,
  • Ravi P. Srivastava

摘要

Tandem solar cells, capable of absorbing a broader range of the solar spectrum, offer enhanced power conversion efficiency (PCE) compared to single-junction solar cells. This study presents the optimization and performance analysis of a monolithic two-terminal all-perovskite tandem solar cell using the SCAPS-1D simulation tool. The tandem architecture comprises a wide-bandgap top cell with Cs0.05(MA0.23 FA0.77)0.95 Pb (Br0.23 I0.77)3 (Eg= 1.68 eV) and a narrow-bandgap bottom cell with CH3NH3SnI3 (Eg = 1.3 eV) as active absorber layers. The study systematically investigates the effects of absorber thickness, charge transport layer thicknesses, operational temperature, and back contact work function on the photovoltaic performance of each sub-cell under standalone conditions. Subsequently, the optimized sub-cells are integrated into a tandem configuration. The top cell is simulated under the standard AM1.5G spectrum, while the bottom cell is analyzed under both the full AM1.5G and the filtered spectrum transmitted through the top cell. To achieve the required current-matching condition in the tandem design, the perovskite absorber thicknesses of the top and bottom cells are carefully optimized. A matched short-circuit current density (JSC) of approximately 16.0 mA/cm² is obtained with absorber layer thicknesses of 150 nm for the top cell and 700 nm for the bottom cell, respectively. The optimized tandem device demonstrates an open-circuit voltage (VOC) of 2.34 V, a fill factor (FF) of 80.49%, and an impressive overall PCE of 30.13%, significantly surpassing conventional single-junction solar cells and many previously reported tandem structures. These findings underscore the potential of all-perovskite tandem architectures for next-generation high-efficiency photovoltaics.