Interfacial fracture of hybrid organic-inorganic perovskite solar cells

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dc.contributor.author Ichwani, Reisya
dc.contributor.author Koech, Richard
dc.contributor.author K.Oyewole, Oluwaseun
dc.contributor.author Huda, Adri
dc.contributor.author O.Oyewole, Deborah
dc.contributor.author Cromwell, Jaya
dc.contributor.author L.Martin, Julia
dc.contributor.author L.Grimm, Ronald
dc.contributor.author O.Soboyejo, Winston
dc.date.accessioned 2021-11-30T05:43:36Z
dc.date.available 2021-11-30T05:43:36Z
dc.date.issued 2021-11-17
dc.identifier.uri https://repository.rsif-paset.org/xmlui/handle/123456789/137
dc.description Journal Article Fuul text: https://doi.org/10.1016/j.eml.2021.101515 en_US
dc.description.abstract The interfacial robustness of perovskite solar cells (PSCs) is important due to the potential for failure resulting from applied loads or deformation in devices that are fabricated on rigid or flexible substrates, and/or residual stresses due to thermal expansion mismatch between layers. Since these can occur across any of the interfaces within typical hybrid organic–inorganic perovskite solar cells, we explore the mechanisms of interfacial fracture between the layered structures of model hybrid organic–inorganic perovskite solar cells. Brazil disk interfacial fracture specimens enable studies of the mode-mixity dependence of interfacial fracture toughness for each interface. The robustness of interfaces is studied across a range of mode mixities between pure mode I and pure mode II. A combination of optical and scanning electron microscopy further elucidates the underlying crack/microstructure interactions and fracture modes. These reveal crack-tip shielding due to crack bridging and microcracking, which were modeled using a zone shielding model to predict the mode-mixity dependence of the interfacial fracture toughness values. We discuss the implications for the development of hybrid organic–inorganic perovskite solar cells with robust interfaces for scalable deployment of photovoltaics. en_US
dc.publisher Extreme Mechanics Letters en_US
dc.subject Organic–inorganic perovskite solar cells Interfacial fracture toughness Mode mixity dependence Crack/microstructure interactions Crack-tip shielding Fracture modes en_US
dc.title Interfacial fracture of hybrid organic-inorganic perovskite solar cells en_US
dc.type Article en_US

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