Perovskite solar cells (PSCs) are as efficient as silicon-based cells. However, the built-in electric field at the interface enhances ion migration, leading to instability. Hyungjun Kim of the Korea Advanced Institute of Science and Technology, Nam-Gyu Park of Sungkyunkwan University, and others adjusted the energy level arrangement of the weakly adhesive homojunction interface to alleviate ion migration and improve the stability and photovoltaic performance of PSCs.
The PSC exhibits a power conversion efficiency (PCE) of 25.3%. Furthermore, the authors confirmed through maximum power point (MPP) tracking under continuous illumination that the device retained more than 97% of its initial PCE even after 1000 hours.
Chunyang Zhang et.al Work function tuning of a weak adhesion homojunction for stable perovskite solar cells Joule 2024
DOI: 10.1016/j.joule.2024.02.015
https://doi.org/10.1016/j.joule.2024.02.015