Sun Fulin, Zhu Ting, Zhang Chenhui, Dong Yi, Guo Yuzhu, Li Dan, You Fangtian, Liang Chunjun
Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China.
Department of Physics, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China.
Nanomaterials (Basel). 2024 Aug 29;14(17):1416. doi: 10.3390/nano14171416.
In recent years, the power conversion efficiency of perovskite solar cells has increased rapidly. Perovskites can be prepared using simple and cost-effective solution methods. However, the perovskite films obtained are usually polycrystalline and contain numerous defects. Passivation of these defects is crucial for enhancing the performance of solar cells. Here, we report the use of propylamine hydroiodide (PAI) for defect passivation. We found that PAI can result in higher-efficiency cells by reducing the defects and suppressing non-radiative recombination. Consequently, n-i-p perovskite solar cells with a certificated efficiency of 21% were obtained. In addition, PAI exhibited excellent performance in p-i-n devices by serving as a buried interface layer, leading to an improved efficiency of 23%.
近年来，钙钛矿太阳能电池的功率转换效率迅速提高。钙钛矿可以通过简单且经济高效的溶液法制备。然而，所获得的钙钛矿薄膜通常是多晶的，并且含有大量缺陷。这些缺陷的钝化对于提高太阳能电池的性能至关重要。在此，我们报道了使用碘化丙胺（PAI）进行缺陷钝化。我们发现PAI可以通过减少缺陷和抑制非辐射复合来制造出效率更高的电池。因此，获得了认证效率为21%的n-i-p钙钛矿太阳能电池（PSCs）。此外，PAI通过用作掩埋界面层在p-i-n器件中表现出优异性能，使效率提高到23%。
