{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Li X"],"funding":["China Postdoctoral Science Foundation","National Natural Science Foundation of China (National Science Foundation of China)"],"pagination":["8692"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12484657"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["16(1)"],"pubmed_abstract":["Wide bandgap (WBG) perovskites hold tremendous potential for enabling efficient perovskite/silicon tandem solar cells. However, interfacial energy losses at the perovskite/electron selective contact interface remain a substantial obstacle in approaching its theoretical efficiency limit. Herein, for the first time, a multifunctional cage-like diammonium chloride molecule, featuring Lewis acid/base groups and strong molecular polarity, is designed to reduce film defects and modulate the interfacial dipole, thereby suppressing non-radiative recombination and optimizing surface band alignment. More importantly, the unique cage-like cation can induce the formation of a phase-pure quasi-2D perovskite with spontaneous in-plane orientation and exhibits a pronounced ferroelectric effect, facilitating carrier further apart and extraction by upshifting the surface work function. Consequently, we achieve 1.68 eV perovskite solar cells with power conversion efficiencies (PCEs) of 22.6% (0.1 cm<sup>2</sup>) and 21.0% (1.21 cm<sup>2</sup>). Furthermore, two-terminal monolithic perovskite/silicon tandem solar cells based on tunnel oxide passivating contact yield an impressive PCE of 31.1% (1.0 cm<sup>2</sup>) and demonstrate a decent operational stability (ISOS-L-1, T<sub>85</sub> > 1020 h in ambient conditions without encapsulation). The ferroelectric interface physics opens new possibilities for efficient and stable perovskite-based tandem photovoltaics."],"journal":["Nature communications"],"pubmed_title":["Minimizing interfacial energy losses via multifunctional cage-like diammonium molecules for efficient perovskite/silicon tandem solar cells."],"pmcid":["PMC12484657"],"funding_grant_id":["2023M743620","U23A200098","2024T170960","62204245"],"pubmed_authors":["Wu J","Liu L","Guo X","Zhang M","Zeng Y","Sun Y","Yang X","Li X","He Z","Ma H","Ying Z","Yu Y","Ye J"],"additional_accession":[]},"is_claimable":false,"name":"Minimizing interfacial energy losses via multifunctional cage-like diammonium molecules for efficient perovskite/silicon tandem solar cells.","description":"Wide bandgap (WBG) perovskites hold tremendous potential for enabling efficient perovskite/silicon tandem solar cells. However, interfacial energy losses at the perovskite/electron selective contact interface remain a substantial obstacle in approaching its theoretical efficiency limit. Herein, for the first time, a multifunctional cage-like diammonium chloride molecule, featuring Lewis acid/base groups and strong molecular polarity, is designed to reduce film defects and modulate the interfacial dipole, thereby suppressing non-radiative recombination and optimizing surface band alignment. More importantly, the unique cage-like cation can induce the formation of a phase-pure quasi-2D perovskite with spontaneous in-plane orientation and exhibits a pronounced ferroelectric effect, facilitating carrier further apart and extraction by upshifting the surface work function. Consequently, we achieve 1.68 eV perovskite solar cells with power conversion efficiencies (PCEs) of 22.6% (0.1 cm<sup>2</sup>) and 21.0% (1.21 cm<sup>2</sup>). Furthermore, two-terminal monolithic perovskite/silicon tandem solar cells based on tunnel oxide passivating contact yield an impressive PCE of 31.1% (1.0 cm<sup>2</sup>) and demonstrate a decent operational stability (ISOS-L-1, T<sub>85</sub> > 1020 h in ambient conditions without encapsulation). The ferroelectric interface physics opens new possibilities for efficient and stable perovskite-based tandem photovoltaics.","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025 Sep","modification":"2026-06-04T01:35:40.112Z","creation":"2026-05-04T03:12:27.031Z"},"accession":"S-EPMC12484657","cross_references":{"pubmed":["41027881"],"doi":["10.1038/s41467-025-63720-8"]}}