A comparison of molecular iodine evolution on the chemistry of lead and tin perovskites

Webb, Thomas; Haque, Saif A.

doi:10.1039/d3ee03004k

Energy Environ. Sci.

2024

DOI: 10.1039/d3ee03004k

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A comparison of molecular iodine evolution on the chemistry of lead and tin perovskites

Thomas Webb,

Saif A. Haque

Abstract: The development of perovskite solar cells (PSCs) has gone from strength to strength over the last decade, enabling low-cost, flexible and high-efficiency photovoltaic devices. However, the significance of molecular iodine...

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Cited by 7 publications

References 243 publications

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Dual‐Stage Reduction Strategy of Tin Perovskite Enables High Performance Photovoltaics

Yang,

Hu,

Teng

et al. 2024

Angewandte Chemie

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The rapid oxidation of Sn2+ in tin‐based perovskite solar cells (TPSCs) restricts their efficiency and stability have been main bottleneck towards further development. This study developed a novel strategy which utilizes thiosulfate ions (S2O32‐) in the precursor solution to enable a dual‐stage reduction process. In the solution stage, thiosulfate acted as an efficacious reducing agent to reduce Sn4+ to Sn2+, meanwhile, its oxidation products were able to reduce I2 to I‐ during the film stage. This dual reduction ability effectively inhibited the oxidation of Sn2+ and passivated defects, further promising an excellent stability of the perovskite devices. As a result, thiosulfate‐incorporated devices achieved a high efficiency of 14.78% with open‐circuit voltage reaching 0.96 V. The stability of the optimized devices achieved a remarkable improvement, maintaining 90% of their initial efficiencies after 628 hours at maximum‐power‐point (MPP). The findings provid research insights and experimental data support for the sustained dynamic reduction in TPSCs.

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Dual‐Stage Reduction Strategy of Tin Perovskite Enables High Performance Photovoltaics

Yang,

Hu,

Teng

et al. 2024

Angewandte Chemie

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show abstract

Dual‐Stage Reduction Strategy of Tin Perovskite Enables High Performance Photovoltaics

Yang,

Hu,

Teng

et al. 2024

Angew Chem Int Ed

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Migration and evolution of iodine in perovskite solar cells

Ma,

Luo,

et al. 2025

Materials Today Physics

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A comparison of molecular iodine evolution on the chemistry of lead and tin perovskites

Abstract: The development of perovskite solar cells (PSCs) has gone from strength to strength over the last decade, enabling low-cost, flexible and high-efficiency photovoltaic devices. However, the significance of molecular iodine...

Cited by 7 publications

References 243 publications

Dual‐Stage Reduction Strategy of Tin Perovskite Enables High Performance Photovoltaics

Dual‐Stage Reduction Strategy of Tin Perovskite Enables High Performance Photovoltaics

Dual‐Stage Reduction Strategy of Tin Perovskite Enables High Performance Photovoltaics

Migration and evolution of iodine in perovskite solar cells

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