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<p>In this study, the performance characteristics of methylammonium tin triiodide (CH<sub>3</sub>NH<sub>3</sub>SnI<sub>3</sub>)-based perovskite solar cells (PSCs) were investigated through simulation using the Solar Cell Capacitance Simulator (SCAPS)-1D. The PSCs were fabricated with a titanium dioxide (TiO<sub>2</sub>)/graphene oxide (GO) composite serving as the electron transport layer (ETL), poly(3-hexylthiophene) (P3HT) as the hole transport layer (HTL), and a carbon-based back contact. The effects of temperature, the doping concentration in CH<sub>3</sub>NH<sub>3</sub>SnI<sub>3</sub>, the bandgaps of CH<sub>3</sub>NH<sub>3</sub>SnI<sub>3</sub> and GO, and the defect density at the TiO<sub>2</sub>/GO interface on the overall device performance were systematically investigated and analyzed. The power conversion efficiency (PCE), fill factor (FF), short-circuit current density (<i>J</i><sub>sc</sub>), and open-circuit voltage (<i>V</i><sub>oc</sub>) were optimized to 22.19%, 76.83%, 26.20&#xa0;mA/cm<sup>2</sup>, and 1.10&#xa0;V, respectively. These optimized results are expected to provide valuable guidance for the development of highly efficient and cost-effective PSCs.</p>

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Device-Simulation-Based Performance Analysis of CH3NH3SnI3 Perovskite Solar Cells Incorporating TiO2/GO Hybrid Electron Transport Layers

  • 期刊论文

  • 发表日期：

    2025年12月24日

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  • Chuankun Wang,
  • Yanling Hao,
  • Xing Zhang,
  • Kuiying Nie

摘要

In this study, the performance characteristics of methylammonium tin triiodide (CH3NH3SnI3)-based perovskite solar cells (PSCs) were investigated through simulation using the Solar Cell Capacitance Simulator (SCAPS)-1D. The PSCs were fabricated with a titanium dioxide (TiO2)/graphene oxide (GO) composite serving as the electron transport layer (ETL), poly(3-hexylthiophene) (P3HT) as the hole transport layer (HTL), and a carbon-based back contact. The effects of temperature, the doping concentration in CH3NH3SnI3, the bandgaps of CH3NH3SnI3 and GO, and the defect density at the TiO2/GO interface on the overall device performance were systematically investigated and analyzed. The power conversion efficiency (PCE), fill factor (FF), short-circuit current density (Jsc), and open-circuit voltage (Voc) were optimized to 22.19%, 76.83%, 26.20 mA/cm2, and 1.10 V, respectively. These optimized results are expected to provide valuable guidance for the development of highly efficient and cost-effective PSCs.