Facet-Dependent Passivation for Efficient Perovskite Solar Cells

• DOI: 10.1021/jacs.3c09327
• Publication Date: 2023-10-26T21:27:11Z
• Authors: Chunqing Ma; Min-Chul Kang; Sun-Ho Lee; Yalan Zhang; Dong-Ho Kang; Wenxin Yang; Pin Zhao; Sang-Woo Kim; Seok Joon Kwon; Cheol-Woong Yang; Yang Yang; Nam-Gyu Park
• Keywords: Passivation; Facet (psychology)

Understanding the interplay between surface structure and passivation materials their effects associated with modification is of fundamental importance; however, it remains an unsolved problem in perovskite field. Here, we report a principle for efficient solar cells via facet-dependent phenomenon. The process selectively occurs on facets, which observed various post-treatment different functionality, atomic arrangements facets determine alignments layers. profound understanding leads to finding 2-amidinopyridine hydroiodide as material uniform effective both (100) (111) facets. Consequently, achieved efficiency 25.10% enhanced stability. concept can provide important clue unidentified principles novel means enhance performance stability perovskite-based devices.