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dc.contributor.authorZhang, Xuning
dc.contributor.authorBi, Shiqing
dc.contributor.authorZhou, Jiyu
dc.contributor.authorYou, Shuai
dc.contributor.authorZhou, Huiqiong
dc.contributor.authorZhang, Yuan
dc.contributor.authorTang, Zhiyong
dc.date.accessioned2021-07-21T04:37:16Z
dc.date.available2021-07-21T04:37:16Z
dc.date.issued2017
dc.identifier.issn2050-7526
dc.identifier.doi10.1039/c7tc02646c
dc.identifier.urihttp://hdl.handle.net/10072/406191
dc.description.abstractHere we investigate temperature-dependent charge transport in solution-processed methylammonium lead triiodide (MAPbI3) perovskite thin films with steady-state mobility measurements. Based on control of the thickness (L) of the MAPbI3 films, one attains tunability in the carrier mobility, trap density and recombination that lead to alterations in the device characteristics. We find that the increased hole mobility in MAPbI3 with incremental variations in L is associated with reduction in the trap concentration and Shockley-Read-Hall (SRH) recombination. By interrogating the ideality factor, we identify that the SRH charge recombination is present in the optimal solar cell. Of interest, the impact of traps on recombination becomes weakened and eventually is overwhelmed by bimolecular recombination with increasing L. Photoluminescence decay kinetics reveal that the PL related to surface and bulk recombination is longer-lived at larger L, in line with the results based on electrical analysis. The meliorated transport properties with reduced charge trapping in MAPbI3 films can correlate to the slightly enhanced crystallinity and homogeneity in the grain size distribution in thicker films. The combinatorial study shows that the transport properties alongside traps in MAPbI3 films are tunable simply by the physical parameter of L. Meanwhile, our work points to the necessity to further reduce the trap density so as to boost the photovoltaic performance using perovskite thin films.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherROYAL SOC CHEMISTRY
dc.relation.ispartofpagefrom9376
dc.relation.ispartofpageto9382
dc.relation.ispartofissue36
dc.relation.ispartofjournalJournal of Materials Chemistry C
dc.relation.ispartofvolume5
dc.subject.fieldofresearchMacromolecular and materials chemistry
dc.subject.fieldofresearchPhysical chemistry
dc.subject.fieldofresearchMaterials engineering
dc.subject.fieldofresearchcode3403
dc.subject.fieldofresearchcode3406
dc.subject.fieldofresearchcode4016
dc.subject.keywordsScience & Technology
dc.subject.keywordsTechnology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsMaterials Science, Multidisciplinary
dc.subject.keywordsPhysics, Applied
dc.titleTemperature-dependent charge transport in solution-processed perovskite solar cells with tunable trap concentration and charge recombination
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationZhang, X; Bi, S; Zhou, J; You, S; Zhou, H; Zhang, Y; Tang, Z, Temperature-dependent charge transport in solution-processed perovskite solar cells with tunable trap concentration and charge recombination, Journal of Materials Chemistry C, 2017, 5 (36), pp. 9376-9382
dc.date.updated2021-07-21T04:35:23Z
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2017 Royal Society of Chemistry. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
gro.hasfulltextFull Text
gro.griffith.authorTang, Zhiyong


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