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Design and performance analysis of Cs2Ag(SbyBi1‐y)Br6 perovskite solar cells: Insights from SCAPS-1D device simulations

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  • Baro, Mahananda
  • Borgohain, Parijat

Abstract

The global shift to renewable energy is crucial for reducing carbon emissions and lowering greenhouse gas levels. Lead-free double perovskite solar cells offer a promising solution for the next generation of photovoltaics due to their excellent optoelectronic properties, environmental sustainability, and potential for low-cost production. This work explores the performance of lead-free Cs2Ag(SbyBi1‐y)Br6 (where y=0,0.2,0.7, and 0.9) double halide perovskite materials for PSC applications using SCAPS-1D simulations. Sb-rich absorbers (y=0.7 and 0.9) showed impressive performance due to better light absorption near the band edges. This improvement also comes from optimized band alignment and charge carrier movement due to Sb incorporation. A maximum theoretical power conversion efficiency of 34.09% has been achieved for the Sb-rich composition (y=0.9). We also evaluated device performance by changing absorber thickness, bulk defect density in the absorber, interfacial trap states, parasitic resistances, and operating temperature to understand its feasibility compared to current photovoltaic technologies. This study highlights the promise of Sb-rich double perovskites for efficient, eco-friendly solar cells.

Suggested Citation

  • Baro, Mahananda & Borgohain, Parijat, 2026. "Design and performance analysis of Cs2Ag(SbyBi1‐y)Br6 perovskite solar cells: Insights from SCAPS-1D device simulations," Renewable Energy, Elsevier, vol. 256(PE).
    • Handle: RePEc:eee:renene:v:256:y:2026:i:pe:s0960148125018890
    DOI: 10.1016/j.renene.2025.124225
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    References listed on IDEAS

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    1. Zeyu Zhang & Qingde Sun & Yue Lu & Feng Lu & Xulin Mu & Su-Huai Wei & Manling Sui, 2022. "Hydrogenated Cs2AgBiBr6 for significantly improved efficiency of lead-free inorganic double perovskite solar cell," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
    2. Nam Joong Jeon & Jun Hong Noh & Woon Seok Yang & Young Chan Kim & Seungchan Ryu & Jangwon Seo & Sang Il Seok, 2015. "Compositional engineering of perovskite materials for high-performance solar cells," Nature, Nature, vol. 517(7535), pages 476-480, January.
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