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dc.contributor.authorZheng, Yangzi
dc.contributor.authorNaphade, Rounak
dc.contributor.authorMondal, Navendu
dc.contributor.authorBakr, Osman
dc.contributor.authorMohammed, Omar F.
dc.contributor.authorGartstein, Yuri N.
dc.contributor.authorMalko, Anton V.
dc.date.accessioned2020-12-31T11:37:58Z
dc.date.available2020-12-31T11:37:58Z
dc.date.issued2020-12-29
dc.date.submitted2020-09-22
dc.identifier.citationZheng, Y., Naphade, R., Mondal, N., Bakr, O. M., Mohammed, O. F., Gartstein, Y. N., & Malko, A. V. (2020). Light Propagation and Radiative Exciton Transport in Two-Dimensional Layered Perovskite Microwires. ACS Photonics. doi:10.1021/acsphotonics.0c01479
dc.identifier.issn2330-4022
dc.identifier.issn2330-4022
dc.identifier.doi10.1021/acsphotonics.0c01479
dc.identifier.urihttp://hdl.handle.net/10754/666789
dc.description.abstractLayered quasi-two-dimensional perovskites are promising candidates for optoelectronic applications exhibiting excitons with high emission quantum yields, high stability, and ease of bandgap tunability. Here, we demonstrate a long-range (∼100 μm) exciton transfer in a layered perovskite structure (en)4Pb2Br9·3Br, with the ethylene diammonium (en) as a spacer that takes place via the reabsorption of emitted photons. Using the two-objectives setup, we directly map the spatiotemporal dynamics of photoluminescence (PL) from perovskite microwires that reveal a clear spectroscopic signature of photon recycling: the appearance of PL emission rise times and the corresponding elongation of the PL decay as a function of separation distance between the excitation and emission locations. We further show that a kinetic model based on the photon-mediated mechanism of the lateral exciton propagation indeed successfully describes all the salient features of the experimental data and gives an independent assessment of the radiative efficiency of the exciton recombination. Our demonstration points out the possibility of judiciously exploiting light management strategies for future high-performance optoelectronic devices with layered perovskite structures.
dc.description.sponsorshipThe work at UT Dallas was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. DESC0010697.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acsphotonics.0c01479
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Photonics, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsphotonics.0c01479.
dc.titleLight Propagation and Radiative Exciton Transport in Two-Dimensional Layered Perovskite Microwires
dc.typeArticle
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Solar Center (KSC)
dc.identifier.journalACS Photonics
dc.rights.embargodate2021-12-29
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Physics, The University of Texas at Dallas, Richardson, Texas 75080, United States
kaust.personNaphade, Rounak
kaust.personBakr, Osman M.
kaust.personMohammed, Omar F.


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