Scientists from Seoul National University, Korea University, and the University of Toledo have developed a new type of three-dimensional (3D) perovskite solar cell. In laboratory tests, this cell demonstrated 26.25 percent efficiency and was found to have a lifespan of over 24,000 hours. This study, published in the journal Nature Energy, is a significant step in advancing perovskite photovoltaics, which are a cheaper and more efficient alternative to silicon panels. This is reported by Ixbt.com .
The main problem with perovskite cells is their rapid degradation under environmental influences, particularly light, heat, and moisture. To solve this, scientists combined 3D and 2D perovskite materials. While the 3D-perovskite serves to absorb light and convert it into electrical energy, the 2D-perovskite layer acts as a shield, increasing the stability of the structure.
Researchers managed to reduce energy loss by placing charge-collecting layers on both sides of the active layer. Experiments showed that the interaction between the 2D and 3D layers improves material properties, and when heated, the 3D structure transitions into a more ordered and stable crystalline form.
This result is considered a major breakthrough for perovskite technologies, as such cells previously degraded very quickly. The new method is suitable for industrial-scale production. The team is currently researching the application of this technology in tandem solar cells to achieve even higher efficiency.
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