Proceedings of MATSUS23 & Sustainable Technology Forum València (STECH23) (MATSUS23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.277
Publication date: 22nd December 2022
Since the seminal report on the 9.7% efficient and 500 h-stable solid-state perovskite solar cell (PSC) in 2012 based on methylammonium lead iodide, power conversion efficiency (PCE) was swiftly increased to 25.7% due to unique photophysical property of halide perovskite. According to Web of Science, number of publications on PSCs increases exponentially since 2012, leading to the accumulated publications of more than 30,900 as of December 2022. PSC is regarded as a game changer in photovoltaics because of low-cost and high efficiency surpassing the conventional high efficiency thin film technologies. High photovoltaic performance was realized by compositional engineering, device architecture and fabrication methodologies for a decade. Toward theoretical efficiency over 30% along with long-term stability, exquisite control of light management and photo-excited charges are highly required, along with thermodynamic phase stability. In this talk, facet engineering of perovskite films is reported. A specific crystal facet was found to have strong interaction with photon, leading to high photocurrent. Furthermore, a certain facet was found to be quite stable under moisture and PSC based on a perovskite film with abundant moisture-tolerant facet was remarkably stable in humid atmosphere even without encapsulation.
This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Korean government (MSIT) under contract NRF-2021R1A3B1076723 (Research Leader Program)
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