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dc.contributor.authorUgur, Esma
dc.contributor.authorSheikh, Arif D.
dc.contributor.authorMunir, Rahim
dc.contributor.authorKhan, Jafar Iqbal
dc.contributor.authorBarrit, Dounya
dc.contributor.authorAmassian, Aram
dc.contributor.authorLaquai, Frédéric
dc.date.accessioned2017-08-07T10:52:00Z
dc.date.available2017-08-07T10:52:00Z
dc.date.issued2017-08-08
dc.identifier.citationUgur E, Sheikh AD, Munir R, Khan JI, Barrit D, et al. (2017) Improved Morphology and Efficiency of n-i-p Planar Perovskite Solar Cells by Processing with Glycol Ether Additives. ACS Energy Letters. Available: http://dx.doi.org/10.1021/acsenergylett.7b00526.
dc.identifier.issn2380-8195
dc.identifier.issn2380-8195
dc.identifier.doi10.1021/acsenergylett.7b00526
dc.identifier.urihttp://hdl.handle.net/10754/625295
dc.description.abstractPlanar perovskite solar cells can be prepared without high temperature processing steps typically associated with mesoporous device architectures; however, their efficiency has been lower and producing high quality perovskite films in planar devices has been challenging. Here, we report a modified two-step interdiffusion protocol suitable to prepare pin-hole free perovskite films with greatly improved morphology. This is achieved by simple addition of small amounts of glycol ethers to the preparation protocol. We unravel the impact the glycol ethers have on the perovskite film formation using in-situ UV-Vis absorbance and GIWAXS experiments. From these experiments we conclude: addition of glycol ethers changes the lead iodide to perovskite conversion dynamics and enhances the conversion efficiency, resulting in more compact polycrystalline films, and it creates micrometer-sized perovskite crystals vertically-aligned across the photoactive layer. Consequently, the average photovoltaic performance increases from 13.5% to 15.9% and reproduciability is enhanced, specifically when 2-methoxyethanol is used as additive.
dc.description.sponsorshipThis work was supported by the King Abdullah University of Science and Technology (KAUST). GIWAXS measurements were performed at D-line at the Cornell High Energy Synchrotron Source (CHESS) at Cornell University. CHESS is supported by the NSF & NIH/NIGMS via NSF award DMR-1332208.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acsenergylett.7b00526
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Energy Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/abs/10.1021/acsenergylett.7b00526.
dc.titleImproved Morphology and Efficiency of n-i-p Planar Perovskite Solar Cells by Processing with Glycol Ether Additives
dc.typeArticle
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentOrganic Electronics and Photovoltaics Group
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalACS Energy Letters
dc.eprint.versionPost-print
kaust.personUgur, Esma
kaust.personSheikh, Arif D.
kaust.personMunir, Rahim
kaust.personKhan, Jafar Iqbal
kaust.personBarrit, Dounya
kaust.personAmassian, Aram
kaust.personLaquai, Frederic
dc.date.published-online2017-08-08
dc.date.published-print2017-09-08


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