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<p>Over the past decades, photovoltaic (PV) technology has seen significant advancements, and bifacial perovskite solar cells (PSCs) are expected to play a crucial role in the future PV market. This study focuses on the design methodology for bifacial PSCs. Nine different ETL materials were initially considered to simulate the PV output parameters. As a first step, four efficient ETL materials were selected for further optimization. The selected structures were then optimized by simultaneously varying the ETL and absorber layer thicknesses for both front and rear side illumination. In addition, a comprehensive parametric study was conducted to investigate the effects of temperature, shunt and series resistances, perovskite bulk defect density, and ETL/perovskite interfacial defects on device performance. Based on a phenomenological analysis of the simulation results, the WS<sub>2</sub>-based ETL device was identified as the most robust configuration, demonstrating significant resistance to destructive factors. Furthermore, the proposed device structures were compared with existing simulations and experimental reports. The WS<sub>2</sub> and ZnO-based ETL devices, which exhibited bifacial PCEs of 26% and 25.39%, respectively, under 10% albedo conditions, emerged as the most promising configurations, surpassing the performance of other devices reported in the literature. In the final phase of this study, simulations of the lead-free RbSnX₃ (X = Cl, Br) perovskites confirmed the potential of these materials to enable bifacial solar cells that combine high performance necessary for market entry and address environmental concerns.</p>

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A strategic approach for design of bifacial perovskite solar cell based on 2D WS2 and Spiro-OMeTAD composite HTL: a computational study

  • 期刊论文

  • 发表日期：

    2026年5月30日

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  • Radman Omrani,
  • Ali Mahjoory,
  • Razieh Teimouri,
  • Shaghayegh Shabani,
  • Hamid Reza Madaah Hosseini,
  • Raheleh Mohammadpour,
  • Mohammadreza Kolahdouz

摘要

Over the past decades, photovoltaic (PV) technology has seen significant advancements, and bifacial perovskite solar cells (PSCs) are expected to play a crucial role in the future PV market. This study focuses on the design methodology for bifacial PSCs. Nine different ETL materials were initially considered to simulate the PV output parameters. As a first step, four efficient ETL materials were selected for further optimization. The selected structures were then optimized by simultaneously varying the ETL and absorber layer thicknesses for both front and rear side illumination. In addition, a comprehensive parametric study was conducted to investigate the effects of temperature, shunt and series resistances, perovskite bulk defect density, and ETL/perovskite interfacial defects on device performance. Based on a phenomenological analysis of the simulation results, the WS2-based ETL device was identified as the most robust configuration, demonstrating significant resistance to destructive factors. Furthermore, the proposed device structures were compared with existing simulations and experimental reports. The WS2 and ZnO-based ETL devices, which exhibited bifacial PCEs of 26% and 25.39%, respectively, under 10% albedo conditions, emerged as the most promising configurations, surpassing the performance of other devices reported in the literature. In the final phase of this study, simulations of the lead-free RbSnX₃ (X = Cl, Br) perovskites confirmed the potential of these materials to enable bifacial solar cells that combine high performance necessary for market entry and address environmental concerns.