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Overcoming ionic migration in perovskite solar cells through alkali metals
dc.contributor.author | Aranda Alonso, Clara | |
dc.contributor.author | Alvarez, Agustin | |
dc.contributor.author | Chivrony, Vladimir S. | |
dc.contributor.author | Das, Chittaranjan | |
dc.contributor.author | Rai, Monika | |
dc.contributor.author | Saliba, Michael | |
dc.date.accessioned | 2024-04-24T07:00:10Z | |
dc.date.available | 2024-04-24T07:00:10Z | |
dc.date.issued | 2024-01-17 | |
dc.identifier.citation | Aranda, C. A., Alvarez, A. O., Chivrony, V. S., Das, C., Rai, M., & Saliba, M. (2024). Overcoming ionic migration in perovskite solar cells through alkali metals. Joule, 8(1), 241-254. | ca_CA |
dc.identifier.issn | 2542-4351 | |
dc.identifier.uri | http://hdl.handle.net/10234/206518 | |
dc.description.abstract | Alkali metals, as additives in perovskite solar cells (PSCs), have been extensively investigated for their impact on performance enhancement. This performance is sensitive to ion-driven interfacial recombination processes that lead to voltage losses and perform with negative capacitance features in impedance spectroscopy (IS). In this study, we exploited negative capacitance as a tool to systematically investigate the influence of Li, Na, and K on the photovoltage of the wide band-gap material MAPbBr3, known for historical photovoltage losses. Sodium cations were found to mitigate adverse interfacial recombination pathways, yielding a remarkable stabilized open-circuit potential of 1.65 V. Impedance measurements indicated sodium significant influence within the material’s bulk, corroborated by time-of-flight secondary ion mass spectrometry and X-ray photoelectron spectroscopy. These techniques confirmed the ability of Na to decrease ionic migration in perovskite materials. X-ray photoelectron spectroscopy (XPS) revealed the underlying mechanism by which Na accomplishes this task: through an electrostatic interaction with the organic compounds. | ca_CA |
dc.format.extent | 13 p. | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Elsevier | ca_CA |
dc.relation.uri | This study did not generate new unique materials. All data are presented in the paper or supplemental information, and no standardized datasets were generated during this study. | ca_CA |
dc.rights | © 2023 Published by Elsevier Inc. | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | ca_CA |
dc.subject | additives | ca_CA |
dc.subject | capacitance | ca_CA |
dc.subject | energy gap | ca_CA |
dc.subject | hysteresis | ca_CA |
dc.subject | perovskite | ca_CA |
dc.subject | perovskite solar cells | ca_CA |
dc.subject | photoelectrons | ca_CA |
dc.subject | photons | ca_CA |
dc.subject | secondary ion mass spectrometry | ca_CA |
dc.subject | sodium | ca_CA |
dc.title | Overcoming ionic migration in perovskite solar cells through alkali metals | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | https://doi.org/10.1016/j.joule.2023.11.011 | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
project.funder.name | German Research Foundation (DFG) | ca_CA |
project.funder.name | Ministerio de Ciencia, Innovación y Universidades | ca_CA |
project.funder.name | Centro para el Desarrollo Tecnológico y la Innovación | ca_CA |
oaire.awardNumber | SPP2196, GRK 2642 | ca_CA |
oaire.awardNumber | PCI2020-112185 | ca_CA |
oaire.awardNumber | IDI-20210171 | ca_CA |
dc.subject.ods | 7. Energia asequible y no contaminante | ca_CA |
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