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Determination of the Single-Exciton Two-Photon Absorption Cross Sections of Semiconductor Nanocrystals through the Measurement of Saturation of Their Two-Photon-Excited Photoluminescence

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dc.contributor.authorKaraulov, A.
dc.contributor.authorKrivenkov, V.
dc.contributor.authorSamokhvalov, P.
dc.contributor.authorDyagileva, D.
dc.contributor.authorNabiev, I.
dc.contributor.authorСамохвалов, Павел Сергеевич
dc.contributor.authorНабиев, Игорь Руфаилович
dc.date.accessioned2024-11-25T16:39:29Z
dc.date.available2024-11-25T16:39:29Z
dc.date.issued2020
dc.description.abstract© 2020 American Chemical Society.Conventional approaches to the determination of the two-photon absorption cross-section (TPACS) of fluorescent semiconductor nanocrystals, including quantum dots (QDs) and nanoplatelets (NPLs), cannot be applied to samples with unknown concentrations and low optical densities and may be inaccurate in the case of multiexciton nanocrystal excitation. Here, we have studied the two-photon-excited photoluminescence saturation in QD and NPL samples and propose a novel technique for determining of their TPACS from the parameters of this process. The technique allows the measurement of the TPACSs of single exciton states in the samples of unknown concentration, as well as in thin films with ultralow optical densities. The calculated values agreed with the results obtained by conventional methods. The new technique paves new ways to studying small amounts of fluorescent nanocrystals of unknown quantity under two-photon excitation.
dc.identifier.citationDetermination of the Single-Exciton Two-Photon Absorption Cross Sections of Semiconductor Nanocrystals through the Measurement of Saturation of Their Two-Photon-Excited Photoluminescence / Karaulov, A. [et al.] // ACS Photonics. - 2020. - 10.1021/acsphotonics.9b01820
dc.identifier.doi10.1021/acsphotonics.9b01820
dc.identifier.urihttps://www.doi.org/10.1021/acsphotonics.9b01820
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85080035646&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000526350900035
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/20341
dc.relation.ispartofACS Photonics
dc.titleDetermination of the Single-Exciton Two-Photon Absorption Cross Sections of Semiconductor Nanocrystals through the Measurement of Saturation of Their Two-Photon-Excited Photoluminescence
dc.typeArticle
dspace.entity.typePublication
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