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Improved Reproducibility for Perovskite Solar Cells with 1 cm² Active Area by a Modified Two-Step Process

Shen, Heping; Wu, Yiliang; Peng, Jun; Duong, The; Fu, Xiao; Barugkin, Chog; White, Thomas P; Weber, Klaus; Catchpole, Kylie R

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With rapid progress in recent years, organohalide perovskite solar cells (PSC) are promising candidates for a new generation of highly efficient thin-film photovoltaic technologies, for which up-scaling is an essential step toward commercialization. In this work, we propose a modified two-step method to deposit the CH3NH3PbI3 (MAPbI3) perovskite film that improves the uniformity, photovoltaic performance, and repeatability of large-area perovskite solar cells. This method is based on the...[Show more]

dc.contributor.authorShen, Heping
dc.contributor.authorWu, Yiliang
dc.contributor.authorPeng, Jun
dc.contributor.authorDuong, The
dc.contributor.authorFu, Xiao
dc.contributor.authorBarugkin, Chog
dc.contributor.authorWhite, Thomas P
dc.contributor.authorWeber, Klaus
dc.contributor.authorCatchpole, Kylie R
dc.date.accessioned2017-04-10T05:34:57Z
dc.identifier.issn1944-8244
dc.identifier.urihttp://hdl.handle.net/1885/114517
dc.description.abstractWith rapid progress in recent years, organohalide perovskite solar cells (PSC) are promising candidates for a new generation of highly efficient thin-film photovoltaic technologies, for which up-scaling is an essential step toward commercialization. In this work, we propose a modified two-step method to deposit the CH3NH3PbI3 (MAPbI3) perovskite film that improves the uniformity, photovoltaic performance, and repeatability of large-area perovskite solar cells. This method is based on the commonly used two-step method, with one additional process involving treating the perovskite film with concentrated methylammonium iodide (MAI) solution. This additional treatment is proved to be helpful for tailoring the residual PbI2 level to an optimal range that is favorable for both optical absorption and inhibition of recombination. Scanning electron microscopy and photoluminescence image analysis further reveal that, compared to the standard two-step and one-step methods, this method is very robust for achieving uniform and pinhole-free large-area films. This is validated by the photovoltaic performance of the prototype devices with an active area of 1 cm(2), where we achieved the champion efficiency of ∼14.5% and an average efficiency of ∼13.5%, with excellent reproducibility.
dc.description.sponsorshipThis work has been supported by the Australian Government through the Australian Renewable Energy Agency (ARENA). K.R.C. acknowledges the support of ARC Future Fellowship.
dc.format.mimetypeapplication/pdf
dc.publisherAmerican Chemical Society
dc.rights© 2017 American Chemical Society
dc.sourceACS applied materials & interfaces
dc.subjectlarge area
dc.subjectmodified two-step method
dc.subjectperovskite solar cells
dc.subjectphotoluminescence image
dc.subjectrepeatability
dc.subjectuniformity
dc.titleImproved Reproducibility for Perovskite Solar Cells with 1 cm² Active Area by a Modified Two-Step Process
dc.typeJournal article
local.identifier.citationvolume9
dc.date.issued2017-02-22
local.publisher.urlhttp://pubs.acs.org/
local.type.statusPublished Version
local.contributor.affiliationShen, H., Centre for Sustainable Energy System, Research School of Engineering, The Australian National University
local.description.embargo2037-12-31
local.identifier.essn1944-8252
local.bibliographicCitation.issue7
local.bibliographicCitation.startpage5974
local.bibliographicCitation.lastpage5981
local.identifier.doi10.1021/acsami.6b13868
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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