Yolthida, Kantapa Long, Dang Xuan Jang, Yoon Hee Hong, Jongin 2024-01-19T08:02:09Z 2024-01-19T08:02:09Z 2024-01-11 2023-12 2574-0962 https://pubs.kist.re.kr/handle/201004/113004 Low-bandgap Pb-Sn mixed perovskite solar cells (PSCs) are emerging as promising contenders for next-generation solar technology due to their broad spectral response and high photocurrent output. To achieve high-quality perovskite films, we propose a mixed antisolvent engineering approach for Pb-Sn mixed perovskites. This technique balances the saturation rate between the precursor and the mixed antisolvent, modulating perovskite nucleation and crystal growth. We discovered that an optimal mixture of chlorobenzene (CB) and ethyl acetate (EA) decelerated the extraction of perovskite precursors, leading to the formation of smoother perovskite films with improved crystallinity and larger grain sizes. Consequently, we observed enhanced charge transport, reduced trap state densities, and an extended near-infrared (NIR) response. These enhancements collectively contributed to the improved performance of low-bandgap Pb-Sn mixed PSCs. Furthermore, the use of EA, an eco-friendly antisolvent, aligns our approach with sustainable manufacturing practices by reducing toxicity during fabrication. English AMER CHEMICAL SOC Enhancing Photovoltaic Performance through Optimized Antisolvent Strategy for Low-Bandgap Pb-Sn Perovskites Article 10.1021/acsaem.3c01808 1 ACS Applied Energy Materials, v.6, no.24, pp.12285 - 12295 ACS Applied Energy Materials 6 24 12285 12295 N scie scopus 001133649600001 2-s2.0-85180112579 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article METAL HALIDE PEROVSKITES SOLAR-CELLS THIN-FILMS HIGHLY EFFICIENT ANTI-SOLVENT STABILITY LIGHT CRYSTALLIZATION DEFECTS Pb-Sn mixed perovskite near-infrared mixed antisolvent chlorobenzene ethyl acetate