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dc.contributor.authorLin, ZQ
dc.contributor.authorLian, HJ
dc.contributor.authorGe, B
dc.contributor.authorZhou, Z
dc.contributor.authorYuan, H
dc.contributor.authorHou, Y
dc.contributor.authorYang, S
dc.contributor.authorYang, HG
dc.date.accessioned2021-09-03T04:37:54Z
dc.date.available2021-09-03T04:37:54Z
dc.date.issued2021
dc.identifier.issn2311-6706
dc.identifier.doi10.1007/s40820-021-00683-7
dc.identifier.urihttp://hdl.handle.net/10072/407546
dc.description.abstractPassivation, as a classical surface treatment technique, has been widely accepted in start-of-the-art perovskite solar cells (PSCs) that can effectively modulate the electronic and chemical property of defective perovskite surface. The discovery of inorganic passivation compounds, such as oxysalts, has largely advanced the efficiency and lifetime of PSCs on account of its favorable electrical property and remarkable inherent stability, but a lack of deep understanding of how its local configuration affects the passivation effectiveness is a huge impediment for future interfacial molecular engineering. Here, we demonstrate the central-atom-dependent-passivation of oxysalt on perovskite surface, in which the central atoms of oxyacid anions dominate the interfacial oxygen-bridge strength. We revealed that the balance of local interactions between the central atoms of oxyacid anions (e.g., N, C, S, P, Si) and the metal cations on perovskite surface (e.g., Pb) generally determines the bond formation at oxysalt/perovskite interface, which can be understood by the bond order conservation principle. Silicate with less electronegative Si central atoms provides strong O-Pb motif and improved passivation effect, delivering a champion efficiency of 17.26% for CsPbI2Br solar cells. Our strategy is also universally effective in improving the device performance of several commonly used perovskite compositions.
dc.description.peerreviewedYes
dc.languageen
dc.publisherSpringer Science and Business Media LLC
dc.relation.ispartofpagefrom177
dc.relation.ispartofissue1
dc.relation.ispartofjournalNano-Micro Letters
dc.relation.ispartofvolume13
dc.subject.fieldofresearchChemical engineering
dc.subject.fieldofresearchElectrical engineering
dc.subject.fieldofresearchcode4004
dc.subject.fieldofresearchcode4008
dc.titleMediating the Local Oxygen-Bridge Interactions of Oxysalt/Perovskite Interface for Defect Passivation of Perovskite Photovoltaics
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationLin, ZQ; Lian, HJ; Ge, B; Zhou, Z; Yuan, H; Hou, Y; Yang, S; Yang, HG, Mediating the Local Oxygen-Bridge Interactions of Oxysalt/Perovskite Interface for Defect Passivation of Perovskite Photovoltaics, Nano-Micro Letters, 2021, 13 (1), pp. 177
dcterms.licensehttps://creativecommons.org/licenses/by/4.0/
dc.date.updated2021-09-03T03:28:13Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
gro.hasfulltextFull Text
gro.griffith.authorYang, Huagui


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