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Lee, Sukbin
Multidimensional Structural Materials Lab.
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dc.citation.endPage 3715 -
dc.citation.number 6 -
dc.citation.startPage 3707 -
dc.citation.title NANO LETTERS -
dc.citation.volume 19 - Ahn, Seung-min - Jung, Eui Dae - Kim, Si-Hoon - Kim, Hangeul - Lee, Sukbin - Song, Myoung Hoon - Kim, Ju-Young - 2023-12-21T19:07:33Z - 2023-12-21T19:07:33Z - 2019-06-25 - 2019-06 -
dc.description.abstract The mechanical flexibility of perovskite solar cells as well as high power conversion efficiency is attracting increasing attention. In addition to existing empirical approaches, such as cyclic bending tests, in this study we report the tensile properties of the perovskite materials themselves. Measuring the tensile properties of free-standing perovskite materials is critical because (1) tensile properties represent the realistic mechanical properties of the film-type perovskite layer in the solar cells including the effects of various defects, and (2) deformation behavior of the perovskite layer at any deformed state of the solar cells can be analyzed using solid mechanics with the tensile properties as input. Critical bending radius of MAPbI3-based flexible solar cells is found to be between 0.5 and 1.0 mm by the decrease in power conversion efficiency during cyclic bending deformation. This finding agrees well with the critical bending radius of 0.66 mm determined based on the elastic deformation limit of 1.17% for MAPbI3 found by in situ tensile testing. Scanning electron microscopy observations and hole-nanoindentation tests suggest that the formation of coarse cracks in the perovskite layers is the primary cause of the decrease in power conversion efficiency observed in flexible perovskite solar cells. © 2019 American Chemical Society. -
dc.identifier.bibliographicCitation NANO LETTERS, v.19, no.6, pp.3707 - 3715 -
dc.identifier.doi 10.1021/acs.nanolett.9b00796 -
dc.identifier.issn 1530-6984 -
dc.identifier.scopusid 2-s2.0-85066904185 -
dc.identifier.uri -
dc.identifier.url -
dc.identifier.wosid 000471834900041 -
dc.language 영어 -
dc.publisher American Chemical Society -
dc.title Nanomechanical Approach for Flexibility of Organic-Inorganic Hybrid Perovskite Solar Cells -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter -
dc.relation.journalResearchArea Chemistry; Science & Technology - Other Topics; Materials Science; Physics -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor critical bending radius -
dc.subject.keywordAuthor elastic deformation limit -
dc.subject.keywordAuthor flexibility -
dc.subject.keywordAuthor in situ tensile testing -
dc.subject.keywordAuthor Perovskite solar cells -
dc.subject.keywordPlus Scanning electron microscopy -
dc.subject.keywordPlus Tensile properties -
dc.subject.keywordPlus Tensile testing -
dc.subject.keywordPlus Well testing -
dc.subject.keywordPlus Critical bending -
dc.subject.keywordPlus flexibility -
dc.subject.keywordPlus High power conversion -
dc.subject.keywordPlus In-situ tensile testing -
dc.subject.keywordPlus Mechanical flexibility -
dc.subject.keywordPlus Nanoindentation tests -
dc.subject.keywordPlus Organic-inorganic hybrid -
dc.subject.keywordPlus Power conversion efficiencies -
dc.subject.keywordPlus Solar cells -
dc.subject.keywordPlus Bending (deformation) -
dc.subject.keywordPlus Bending tests -
dc.subject.keywordPlus Biomechanics -
dc.subject.keywordPlus Conversion efficiency -
dc.subject.keywordPlus Cyclic loads -
dc.subject.keywordPlus Degrees of freedom (mechanics) -
dc.subject.keywordPlus Efficiency -
dc.subject.keywordPlus Elastic deformation -
dc.subject.keywordPlus Materials testing apparatus -
dc.subject.keywordPlus Mechanical properties -
dc.subject.keywordPlus Nanostructured materials -
dc.subject.keywordPlus organic-inorganic materials -
dc.subject.keywordPlus Perovskite -
dc.subject.keywordPlus Perovskite solar cells -


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