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2022 SCIENCE (IF63.714), How does the metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells?

 

    The performance of three-dimensional (3D) organic-inorganic halide perovskite solar cells (PSCs) can be enhanced by surface treatment with 2D layered perovskites with efficient charge transport.

       Kai Zhu et al recently published a study in Science. The research team maximized hole transport between layers of a metastable Dion-Jacobson (DJ) two-dimensional perovskite that tunes the alignment of asymmetric bulky organic molecules. The reduction of the energy barrier for hole transport resulted in a 4- to 5-fold increase in the out-of-plane transport rate and a power conversion efficiency (PCE) of 4.9% in 2D PSCs. With the help of the metastable DJ 2D surface layer, the PCEs of three common 3D PSCs are improved by about 12% to 16%, reaching about 24.7%. For a triple-cation–mixed-halide PSC, 90% of the initial PCE was retained after 1000 hours of 1-sun operation at ~40°C in nitrogen.

2022 SCIENCE (IF63.714), How does the metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells? science
2022 SCIENCE (IF63.714), How does the metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells? SCIENCE IF63.714 How does the metastable Dion Jacobson 2D structure enables efficient and stable perovskite solar cells
2022 SCIENCE (IF63.714), How does the metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells? SCIENCE IF63.714 How does the metastable Dion Jacobson 2D structure enables efficient and stable perovskite solar cells

Key word: perovskite crystals , perovskite film , PCE, 2D structure, metastable, Science

原文:https://www.science.org/doi/10.1126/science.abj2637

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How does the metastable Dion-Jacobson 2D structure enables efficient and stable perovskite solar cells

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