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Perovskite

Breakthrough in Halide Perovskite Solar Cells Exceeds 27% Efficiency Threshold

Strategic Insights

— 1 min read

Research conducted at Seoul National University in collaboration with international partners has led to a significant advancement in the development of halide perovskite solar cells. The team's novel composition, formamidinium lead triiodide (FAPbI), has demonstrated outstanding optoelectronic properties and structural stability, paving the way for high-performance solar cells. Financial support for the research was provided by the National Research Foundation of Korea.

The key to the breakthrough lies in the interaction between formamidinium (FA) and the inorganic framework of the perovskite, which determines the chemical bonding nature and thus affects the optoelectronic properties and stability of the material. By understanding this mechanism, the researchers have been able to design and optimize FAPbI-based perovskite solar cells with power conversion efficiencies exceeding 27%.

Key Takeaways:

  • The composition of halide perovskite has been modified from methylammonium lead triiodide (MAPbI) to formamidinium lead triiodide (FAPbI) to achieve high-performance solar cells with power conversion efficiencies of over 27%.
  • FAPbI-based perovskite solar cells have demonstrated improved stability under external stress and suitable bandgap, closer to the ideal one.
  • The interaction between FA and the inorganic framework of the perovskite determines its chemical bonding nature and affects the optoelectronic properties and stability of the material.
  • Financial support for the research was provided by the National Research Foundation of Korea.
  • The research has been peer-reviewed and is published in Chemical Society Reviews.
  • The publication includes a detailed review of the progress of FAPbI-based perovskite solar cells and strategies for resolving their metastable character and surface defect properties.

Statistics:

  • Power conversion efficiencies of FAPbI-based perovskite solar cells: over 27%.
  • The interaction between FA and the inorganic framework affects the chemical bonding nature, optoelectronic properties, and structural stability of the material.
  • National Research Foundation of Korea provided financial support for the research.
  • The research is published in Chemical Society Reviews, a journal of the Royal Society of Chemistry.
  • The number of authors on the research: 5, including Jin-Wook Lee, Hui-Seon Kim, Anders Hagfeldt, Michael Gratzel, and Nam-Gyu Park.

Sources:

  • NewsRx LLC. Research Results from Seoul National University Update Understanding of Science (Molecular-level understandings and device strategies for FAPbI3-based perovskite solar cells). Electronics Newsweekly. October 21, 2025; p 510.
  • Royal Soc Chemistry. Chemical Society Reviews. pubs.rsc.org/en/journals/journalissues/cs.

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