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<p>Perovskite solar cells have high efficiency and excellent optoelectronic features, making them a low-cost alternative to old silicon PV technology. This work addresses the instability and toxicity issues related to lead halide perovskite solar cells (PSCs) by introducing a stable and lead-free BiFeO<sub>3</sub> (BFO) as perovskite absorber. Furthermore, it initially builds on an earlier published experimental BFO solar cell (SC). The mathematical models were validated by calibrating the simulated J-V curve with the experimental curve. Subsequently, novel material design and optimisation strategies were adopted to improve the efficiency in BFO.BFO PSCs, utilizing a variety of electron transport layers (ETLs) like ZnO, TiO<sub>2</sub>, C<sub>60</sub>, ZnS, PCBM and hole transport layers (HTLs) such as NiO, Cu<sub>2</sub>O, P3HT, PEDOT: PSS, and Spiro-OMeTAD were modelled numerically using SETFOS 5.3 software. An extensive analysis was conducted to determine the optimum thicknesses, doping densities of the active layer, ETLs, and HTLs. Additionally, the effects of the defects in the absorber, series and shunt resistance, various electrodes, and working temperature on device efficiency were investigated. After thorough optimization, the PV device with configuration FTO/ZnO/BiFeO<sub>3</sub>/Cu<sub>2</sub>O/Au demonstrates the highest performance. A power conversion efficiency (PCE) of 15.98%, a short-circuit current density (J<sub>sc</sub>) of 17.86&#xa0;mA/cm², an open-circuit voltage (V<sub>oc</sub>) of 1.159&#xa0;V, and a fill factor (FF) of 77.15% are achieved. It is 4% more than the highest PCE reported for BFO material in the literature.</p>

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Design and optimization of BiFeO3 based perovskite solar cells to enhance PV performance

  • 期刊论文

  • 发表日期：

    2025年12月8日

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  • Krushna Hial,
  • Punyatoya Mishra,
  • Sukanta K. Tripathy

摘要

Perovskite solar cells have high efficiency and excellent optoelectronic features, making them a low-cost alternative to old silicon PV technology. This work addresses the instability and toxicity issues related to lead halide perovskite solar cells (PSCs) by introducing a stable and lead-free BiFeO3 (BFO) as perovskite absorber. Furthermore, it initially builds on an earlier published experimental BFO solar cell (SC). The mathematical models were validated by calibrating the simulated J-V curve with the experimental curve. Subsequently, novel material design and optimisation strategies were adopted to improve the efficiency in BFO.BFO PSCs, utilizing a variety of electron transport layers (ETLs) like ZnO, TiO2, C60, ZnS, PCBM and hole transport layers (HTLs) such as NiO, Cu2O, P3HT, PEDOT: PSS, and Spiro-OMeTAD were modelled numerically using SETFOS 5.3 software. An extensive analysis was conducted to determine the optimum thicknesses, doping densities of the active layer, ETLs, and HTLs. Additionally, the effects of the defects in the absorber, series and shunt resistance, various electrodes, and working temperature on device efficiency were investigated. After thorough optimization, the PV device with configuration FTO/ZnO/BiFeO3/Cu2O/Au demonstrates the highest performance. A power conversion efficiency (PCE) of 15.98%, a short-circuit current density (Jsc) of 17.86 mA/cm², an open-circuit voltage (Voc) of 1.159 V, and a fill factor (FF) of 77.15% are achieved. It is 4% more than the highest PCE reported for BFO material in the literature.