Ultrafast transient optical loss dynamics in exciton-plasmon nano-assemblies

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buir.contributor.authorÖzbay, Ekmel
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
dc.citation.epage6566en_US
dc.citation.issueNumber19en_US
dc.citation.spage6558en_US
dc.citation.volumeNumber9en_US
dc.contributor.authorElkabbash, M.en_US
dc.contributor.authorRashed, A.R.en_US
dc.contributor.authorKucukoz, B.en_US
dc.contributor.authorNguyen, Q.en_US
dc.contributor.authorKaratay, A.en_US
dc.contributor.authorYaglioglu, G.en_US
dc.contributor.authorÖzbay, Ekmelen_US
dc.contributor.authorCaglayan, H.en_US
dc.contributor.authorStrangi, G.en_US
dc.date.accessioned2018-04-12T11:06:54Z
dc.date.available2018-04-12T11:06:54Z
dc.date.issued2017en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractWe study the exciton-plasmon dynamics that lead to optical loss mitigation via ultrafast transient absorption spectroscopy (UTAS) on hybrid aggregates of core-shell quantum dots (QDs) and Au nanoparticles (NPs). We highlight that generating hot electrons in plasmonic NPs contributes to the transient differential absorption spectrum under optical excitation. The results suggest modifying the method of analyzing the transient absorption spectra of loss mitigated systems. Additionally, we investigate the effect of Electron Oscillation frequency-Phonon Resonance Detuning (EOPRD) on loss mitigation efficiency. Moreover, power dependent UTAS reveal a frequency pulling like effect in the transient bleach maximum towards the gain emission. We show that the appropriate choice of the pump wavelength and by changing the pump power we can conclusively prove the existence of loss mitigation using UTAS. Finally, we study the transient kinetics of hybrid gain-plasmon systems and report interesting hybrid transient kinetics.en_US
dc.identifier.doi10.1039/c7nr01512gen_US
dc.identifier.issn2040-3364
dc.identifier.urihttp://hdl.handle.net/11693/37238
dc.language.isoEnglishen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.isversionofhttp://dx.doi.org/10.1039/c7nr01512gen_US
dc.source.titleNanoscaleen_US
dc.subjectElectromagnetic wave absorptionen_US
dc.subjectExcitonsen_US
dc.subjectGolden_US
dc.subjectHot electronsen_US
dc.subjectPlasmonsen_US
dc.subjectSemiconductor quantum dotsen_US
dc.subjectCore-shell quantum dotsen_US
dc.subjectDifferential absorptionen_US
dc.subjectElectron oscillationsen_US
dc.subjectHybrid aggregatesen_US
dc.subjectMitigation efficiencyen_US
dc.subjectTransient absorption spectraen_US
dc.subjectTransient kineticsen_US
dc.subjectUltrafast transient absorption spectroscopyen_US
dc.subjectAbsorption spectroscopyen_US
dc.titleUltrafast transient optical loss dynamics in exciton-plasmon nano-assembliesen_US
dc.typeArticleen_US

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