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dc.contributor.authorWalters, Grant
dc.contributor.authorSutherland, Brandon R
dc.contributor.authorHoogland, Sjoerd
dc.contributor.authorShi, Dong
dc.contributor.authorComin, Riccardo
dc.contributor.authorSellan, Daniel P.
dc.contributor.authorBakr, Osman
dc.contributor.authorSargent, Edward H.
dc.date.accessioned2015-07-27T12:17:51Z
dc.date.available2015-07-27T12:17:51Z
dc.date.issued2015-07-27
dc.identifier.citationTwo-Photon Absorption in Organometallic Bromide Perovskites 2015:150721165420006 ACS Nano
dc.identifier.issn1936-0851
dc.identifier.issn1936-086X
dc.identifier.pmid26196162
dc.identifier.doi10.1021/acsnano.5b03308
dc.identifier.urihttp://hdl.handle.net/10754/561064
dc.description.abstractOrganometallic trihalide perovskites are solution processed semiconductors that have made great strides in third generation thin film light harvesting and light emitting optoelectronic devices. Recently it has been demonstrated that large, high purity single crystals of these perovskites can be synthesized from the solution phase. These crystals’ large dimensions, clean bandgap, and solid-state order, have provided us with a suitable medium to observe and quantify two-photon absorption in perovskites. When CH3NH3PbBr3 single crystals are pumped with intense 800 nm light, we observe band-to-band photoluminescence at 572 nm, indicative of two-photon absorption. We report the nonlinear absorption coefficient of CH3NH3PbBr3 perovskites to be 8.6 cm GW-1 at 800 nm, comparable to epitaxial single crystal semiconductors of similar bandgap. We have leveraged this nonlinear process to electrically autocorrelate a 100 fs pulsed laser using a two-photon perovskite photodetector. This work demonstrates the viability of organometallic trihalide perovskites as a convenient and low-cost nonlinear absorber for applications in ultrafast photonics.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acsnano.5b03308
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, 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/acsnano.5b03308.
dc.titleTwo-Photon Absorption in Organometallic Bromide Perovskites
dc.typeArticle
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentKAUST Solar Center (KSC)
dc.contributor.departmentMaterials Science and Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalACS Nano
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada
kaust.personShi, Dong
kaust.personBakr, Osman M.
refterms.dateFOA2016-07-21T00:00:00Z
dc.date.published-online2015-07-27
dc.date.published-print2015-09-22


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