Atomic-Level Microstructure of Efficient Formamidinium-Based Perovskite Solar Cells Stabilized by 5-Ammonium Valeric Acid Iodide Revealed by Multinuclear and Two-Dimensional Solid-State NMR

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dc.citation.issue44
dc.citation.rankM21a
dc.citation.spage17659
dc.citation.volume141
dc.contributor.authorAlanazi, Anwar Q.
dc.contributor.authorKubicki, Dominik J.
dc.contributor.authorProchowicz, Daniel
dc.contributor.authorAlharbi, Essa A.
dc.contributor.authorBouduban, Marine E. F.
dc.contributor.authorJahanbakhshi, Farzaneh
dc.contributor.authorMladenović, Marko
dc.contributor.authorMilić, Jovana
dc.contributor.authorGiordano, Fabrizio
dc.contributor.authorRen, Dan
dc.contributor.authorAlyamani, Ahmed Y.
dc.contributor.authorAlbrithen, Hamad
dc.contributor.authorAlbadri, Abdulrahman
dc.contributor.authorAlotaibi, Mohammad Hayal
dc.contributor.authorMoser, Jacques-E.
dc.contributor.authorZakeeruddin, Shaik M.
dc.contributor.authorRothlisberger, Ursula
dc.contributor.authorEmsley, Lyndon
dc.contributor.authorGrätzel, Michael
dc.date.accessioned2024-06-25T07:02:39Z
dc.date.available2024-06-25T07:02:39Z
dc.date.issued2019-10-08
dc.description.abstractChemical doping of inorganic-organic hybrid perovskites is an effective way of improving the performance and operational stability of perovskite solar cells (PSCs). Here we use 5-ammonium valeric acid iodide (AVAI) to chemically stabilize the structure of α-FAPbI3. Using solid-state MAS NMR, we demonstrate the atomic-level interaction between the molecular modulator and the perovskite lattice and propose a structural model of the stabilized three-dimensional structure, further aided by density functional theory (DFT) calculations. We find that one-step deposition of the perovskite in the presence of AVAI produces highly crystalline films with large, micrometer-sized grains and enhanced charge-carrier lifetimes, as probed by transient absorption spectroscopy. As a result, we achieve greatly enhanced solar cell performance for the optimized AVA-based devices with a maximum power conversion efficiency (PCE) of 18.94%. The devices retain 90% of the initial efficiency after 300 h under continuous white light illumination and maximum-power point-tracking measurement.
dc.identifier.doi10.1021/jacs.9b07381
dc.identifier.issn0002-7863
dc.identifier.issn1520-5126
dc.identifier.scopus2-s2.0-85074402865
dc.identifier.urihttps://pub.ipb.ac.rs/handle/123456789/135
dc.identifier.wos000495769300026
dc.language.isoen
dc.publisherAmerican Chemical Society (ACS)
dc.relation.ispartofJournal of the American Chemical Society
dc.relation.ispartofabbrJ. Am. Chem. Soc.
dc.rightsrestrictedAccess
dc.titleAtomic-Level Microstructure of Efficient Formamidinium-Based Perovskite Solar Cells Stabilized by 5-Ammonium Valeric Acid Iodide Revealed by Multinuclear and Two-Dimensional Solid-State NMR
dc.typeArticle
dc.type.versionpublishedVersion
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