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dc.contributor.authorNienhaus, Lea
dc.contributor.authorCorrea-Baena, Juan-Pablo
dc.contributor.authorWieghold, Sarah
dc.contributor.authorEinzinger, Markus
dc.contributor.authorLin, Ting-An
dc.contributor.authorShulenberger, Katherine
dc.contributor.authorKlein, Nathan
dc.contributor.authorWu, Mengfei
dc.contributor.authorBulovic, Vladimir
dc.contributor.authorBuonassisi, Tonio
dc.contributor.authorBaldo, Marc A
dc.contributor.authorBawendi, Moungi G
dc.date.accessioned2019-12-27T18:04:45Z
dc.date.available2019-12-27T18:04:45Z
dc.date.issued2019-03-22
dc.date.submitted2019-02-05
dc.identifier.issn2380-8195
dc.identifier.urihttps://hdl.handle.net/1721.1/123322
dc.description.abstractLead halide-based perovskite thin films have attracted great attention due to the rapid increase in perovskite solar cell efficiencies. The same optoelectronic properties that make perovskites ideal absorber materials in solar cells are also beneficial in other light-harvesting applications and make them prime candidates as triplet sensitizers in upconversion via triplet-triplet annihilation in rubrene. In this contribution, we take advantage of long carrier lifetimes and carrier diffusion lengths in perovskite thin films, their high absorption cross-sections throughout the visible spectrum, and the strong spin-orbit coupling owing to the abundance of heavy atoms to sensitize the upconverter rubrene. Employing bulk perovskite thin films as the absorber layer and spin-mixer in inorganic/organic heterojunction upconversion devices allows us to forego the passivating ligands required for colloidal sensitizers, which can hinder exciton transport through large scale arrays and reduce the triplet transfer efficiency to the annihilator. Our bilayer device exhibits an upconversion efficiency in excess of 3% under 785 nm illumination at an incident power of ∼88 W/cm[superscript 2]. Keywords: lead halide perovskites; upconversion; free carriers; triplet excitons; charge-separated state; triplet-charge annihilation; triplet-triplet annihilationen_US
dc.description.sponsorshipNational Science Foundation (U.S.) (Contract EEC-1041895)en_US
dc.description.sponsorshipNational Science Foundation (NSF) (Grant EEC-1041895)en_US
dc.description.sponsorshipNational Science Foundation Graduate Research Fellowship (Grant 1122374)en_US
dc.description.sponsorshipUS Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering (Award DE-FG02-07ER46454)en_US
dc.language.isoen
dc.publisherAmerican Chemical Society (ACS)en_US
dc.relation.isversionof10.1021/acsenergylett.9b00283en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceOther repositoryen_US
dc.titleDEBBIE: Triplet-Sensitization by Lead Halide Perovskite Thin Films for Near-Infrared-to-Visible Upconversionen_US
dc.typeArticleen_US
dc.identifier.citationNwinhaus, Lea et al. "Triplet-Sensitization by Lead Halide Perovskite Thin Films for Near-Infrared-to-Visible Upconversion." ACS Energy Letters 4, 4 (March 2019): 888-895 © 2019 American Chemical Societyen_US
dc.relation.journalACS Energy Lettersen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2019-09-20T11:27:55Z
dspace.date.submission2019-09-20T11:27:57Z
mit.journal.volume4en_US
mit.journal.issue4en_US


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