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<p>Organic solar cells are gaining attention as environmentally friendly alternatives to conventional photovoltaic technologies. This study investigates PBDB-T/ITIC-based polymer solar cells incorporating P3HT as the hole transport layer and WS<sub>2</sub> as the electron transport layer. Device behavior was simulated using SCAPS-1D to optimize structural parameters and improve performance. The effects of absorber thickness, defect density, and charge-carrier concentration on key photovoltaic characteristics were systematically analyzed. Results show that appropriate tuning of absorber thickness and defect density significantly enhances device efficiency. The optimized structure achieves a power conversion efficiency of 17.82% at a 200&#xa0;nm absorber thickness, with <i>V</i><sub>oc</sub> = 0.8847&#xa0;V, <i>J</i><sub>sc</sub> = 26.88&#xa0;mA&#xa0;cm⁻<sup>2</sup>, and FF = 74.9%, representing a substantial improvement over thinner device. Overall, the findings highlight the performance potential and environmental advantages of PBDB-T/ITIC-based organic solar cells and provide useful guidance for developing commercially viable polymer thin-film photovoltaics.</p> Graphical abstract <p></p>

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Simulation of PBDB-T/ITIC-based organic solar cell using SCAPS-1D

  • 期刊论文

  • 发表日期：

    2025年12月19日

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  • A. S. Mathur,
  • Rohit Kumar,
  • Amita,
  • Amar Kumar,
  • B. P. Singh

摘要

Organic solar cells are gaining attention as environmentally friendly alternatives to conventional photovoltaic technologies. This study investigates PBDB-T/ITIC-based polymer solar cells incorporating P3HT as the hole transport layer and WS2 as the electron transport layer. Device behavior was simulated using SCAPS-1D to optimize structural parameters and improve performance. The effects of absorber thickness, defect density, and charge-carrier concentration on key photovoltaic characteristics were systematically analyzed. Results show that appropriate tuning of absorber thickness and defect density significantly enhances device efficiency. The optimized structure achieves a power conversion efficiency of 17.82% at a 200 nm absorber thickness, with Voc = 0.8847 V, Jsc = 26.88 mA cm⁻2, and FF = 74.9%, representing a substantial improvement over thinner device. Overall, the findings highlight the performance potential and environmental advantages of PBDB-T/ITIC-based organic solar cells and provide useful guidance for developing commercially viable polymer thin-film photovoltaics.

Graphical abstract