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2022-08-07Zeitschriftenartikel DOI: 10.18452/25795
Revealing the Role of Methylammonium Iodide Purity on the Vapor‐Phase Deposition Process of Perovskites
dc.contributor.authorRoß, Marcel
dc.contributor.authorStutz, Marvin B.
dc.contributor.authorAlbrecht, Steve
dc.date.accessioned2023-01-06T10:43:51Z
dc.date.available2023-01-06T10:43:51Z
dc.date.issued2022-08-07none
dc.date.updated2022-12-06T12:43:19Z
dc.identifier.urihttp://edoc.hu-berlin.de/18452/26468
dc.description.abstractVapor deposition processes, well established in the industry, are considered a cost‐effective manufacturing route for large‐area depositions of lead halide perovskites. However, the vapor deposition of perovskites is constrained by its low reproducibility, whereby in particular the evaporation of methylammonium iodide (MAI) is frequently reported as extremely challenging. Herein, the influence of impurities on the evaporation dynamics of MAI is analyzed. It is proved that MAI heated in a high vacuum, depending on the purity, either undergoes a sublimation with a subsequent desublimation or a chemical decomposition with a following reverse reaction, leading to solid MAI in both cases. In situ mass spectrometry enables us to show that low purity MAI containing water and methylammonium phosphite impurities mainly sublimes, which results in a directional and by crystal microbalances traceable evaporation. In contrast, high purity MAI sublimes at higher temperatures and tends to form decomposition products such as methylamine and hydrogen iodide, which omnidirectional diffuse and can react with lead iodide to perovskite. The findings reveal the reason for the reported challenges, serve as a guideline for future material selections, and can enhance the reproducibility of the evaporation process to achieve a more controlled solar cell fabrication.eng
dc.description.sponsorshipBundesministerium für Bildung und Forschung http://dx.doi.org/10.13039/501100002347
dc.description.sponsorshipHelmholtz Association within the HySPRINT Innovation Lab Project
dc.description.sponsorshipHyPerCells Joint Graduate School
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 4.0) Attribution 4.0 Internationalger
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectco-evaporationeng
dc.subjectimpuritieseng
dc.subjectmethylammonium iodideeng
dc.subjectperovskiteseng
dc.subjectreproducibilityeng
dc.subjectvapor-phase depositioneng
dc.subject.ddc600 Technik und Technologienone
dc.titleRevealing the Role of Methylammonium Iodide Purity on the Vapor‐Phase Deposition Process of Perovskitesnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/26468-7
dc.identifier.doihttp://dx.doi.org/10.18452/25795
dc.type.versionpublishedVersionnone
local.edoc.pages9none
local.edoc.type-nameZeitschriftenartikel
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
dc.description.versionPeer Reviewednone
dc.identifier.eissn2367-198X
dcterms.bibliographicCitation.doi10.1002/solr.202200500none
dcterms.bibliographicCitation.journaltitleSolar RRLnone
dcterms.bibliographicCitation.volume6none
dcterms.bibliographicCitation.issue10none
dcterms.bibliographicCitation.articlenumber2200500none
dcterms.bibliographicCitation.originalpublishernameWiley-VCHnone
dcterms.bibliographicCitation.originalpublisherplaceWeinheimnone
bua.departmentMathematisch-Naturwissenschaftliche Fakultätnone

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