Latest AFM By Byungwoo Park, Seoul National University: Double-sided Passivation Of Perovskite Solar Cells For High Performance And Stability

Perovskite solar cells are promising renewable energy devices due to their attractive properties. However, they face challenges in terms of power conversion efficiency and long-term stability. The presence of surface defects in perovskite solar cells is a significant obstacle to achieving high efficiency and stability, as these defects can lead to nonradiative recombination and degradation. In view of this, Seoul National University Byungwoo Park & Suwon University Jinhyun Kim published the research results of double-sided passivation of perovskite solar cells to achieve high performance and stability at AFM on September 12, 2023, using phenyltrimethyl iodide A new double-sided surface passivation method using ammonium (PTMAI) salt to effectively remove electronic defects. In addition, PTMAI double-sided passivation helps enhance perovskite crystallinity and relax the uneven distribution of local strain. Finally, through PTMAI double-sided passivation, the efficiency of perovskite solar cells was significantly improved, reaching an efficiency of 21.87%. Furthermore, the passivated cells showed enhanced long-term stability, retaining more than 80% of the initial efficiency after 1860 hours and 1030 hours at 60°C and 1 sun, respectively.

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