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dc.contributor.authorHaque, Mohammed
dc.contributor.authorSyed, Ahad
dc.contributor.authorAkhtar, Faheem
dc.contributor.authorShevate, Rahul
dc.contributor.authorSingh, Simrjit
dc.contributor.authorPeinemann, Klaus-Viktor
dc.contributor.authorBaran, Derya
dc.contributor.authorWu, Tao
dc.date.accessioned2019-09-12T08:21:55Z
dc.date.available2019-09-12T08:21:55Z
dc.date.issued2019-07-25
dc.identifier.citationHaque, M. A., Syed, A., Akhtar, F. H., Shevate, R., Singh, S., Peinemann, K.-V., … Wu, T. (2019). Giant Humidity Effect on Hybrid Halide Perovskite Microstripes: Reversibility and Sensing Mechanism. ACS Applied Materials & Interfaces, 11(33), 29821–29829. doi:10.1021/acsami.9b07751
dc.identifier.doi10.1021/acsami.9b07751
dc.identifier.urihttp://hdl.handle.net/10754/656747
dc.description.abstractDespite the exceptional performance of hybrid perovskites in photovoltaics, their susceptibility to ambient factors, particularly humidity, gives rise to the well-recognized stability issue. In the present work, microstripes of CH3NH3PbI3 are fabricated on flexible substrates, and they exhibit much larger response to relative humidity (RH) levels than continuous films and single crystals. The resistance of microstripes decreases by four orders of magnitude on changing the RH level from 10 to 95%. Fast response and recovery time of 100 and 500 ms, respectively, are recorded. Because bulk diffusion and defect trapping are much slower processes, our result indicates a surface-dictated mechanism related to hydrate formation and electron donation. In addition, water uptake behavior of perovskites is studied for the first time, which correlates well with the resistance decrease of the CH3NH3PbI3 microstripes. Furthermore, we report that the photoresponse decreases with increasing humidity, and at the 85% RH level, the perovskite device is not photoresponsive anymore. Our work underscores patterned structures as a new platform to investigate the interaction of hybrid perovskites with ambient factors and reveals the importance of the humidity effect on optoelectronic performance.
dc.description.sponsorshipResearch reported in this publication was supported by the King Abdullah University of Science and Technology (KAUST).
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttp://pubs.acs.org/doi/10.1021/acsami.9b07751
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials and Interfaces, 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/10.1021/acsami.9b07751.
dc.subjecthybrid perovskite
dc.subjecthumidity
dc.subjectlithography
dc.subjectpatterns
dc.subjectsensor
dc.titleGiant Humidity Effect on Hybrid Halide Perovskite Microstripes: Reversibility and Sensing Mechanism
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalACS Applied Materials and Interfaces
dc.rights.embargodate2020-01-01
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Materials Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
kaust.personHaque, Mohammed
kaust.personSyed, Ahad
kaust.personAkhtar, Faheem Hassan
kaust.personShevate, Rahul
kaust.personPeinemann, Klaus-Viktor
kaust.personBaran, Derya
refterms.dateFOA2019-09-15T12:17:55Z
dc.date.published-online2019-07-25
dc.date.published-print2019-08-21


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