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dc.contributor.authorTaghipour, Nimaen_US
dc.contributor.authorHernandez Martinez, Pedro Ludwigen_US
dc.contributor.authorOzden, Ayberken_US
dc.contributor.authorOlutas, Muraten_US
dc.contributor.authorDede, Didemen_US
dc.contributor.authorGungor, Kivancen_US
dc.contributor.authorErdem, Onuren_US
dc.contributor.authorPerkgoz, Nihan Koskuen_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.identifier.citationTaghipour, N., Hernandez Martinez, P. L., Ozden, A., Olutas, M., Dede, D., Gungor, K., . . . Demir, H. V. (2018). Near-unity efficiency energy transfer from colloidal semiconductor quantum wells of CdSe/CdS nanoplatelets to a monolayer of MoS2. ACS Nano, 12(8), 8547-8554. doi:10.1021/acsnano.8b04119en_US
dc.description.abstractA hybrid structure of the quasi-2D colloidal semiconductor quantum wells assembled with a single layer of 2D transition metal dichalcogenides offers the possibility of highly strong dipole-to-dipole coupling, which may enable extraordinary levels of efficiency in Förster resonance energy transfer (FRET). Here, we show ultrahigh-efficiency FRET from the ensemble thin films of CdSe/CdS nanoplatelets (NPLs) to a MoS2 monolayer. From time-resolved fluorescence spectroscopy, we observed the suppression of the photoluminescence of the NPLs corresponding to the total rate of energy transfer from ∼0.4 to 268 ns-1. Using an Al2O3 separating layer between CdSe/CdS and MoS2 with thickness tuned from 5 to 1 nm, we found that FRET takes place 7- to 88-fold faster than the Auger recombination in CdSe-based NPLs. Our measurements reveal that the FRET rate scales down with d-2 for the donor of CdSe/CdS NPLs and the acceptor of the MoS2 monolayer, d being the center-to-center distance between this FRET pair. A full electromagnetic model explains the behavior of this d-2 system. This scaling arises from the delocalization of the dipole fields in the ensemble thin film of the NPLs and full distribution of the electric field across the layer of MoS2. This d-2 dependency results in an extraordinarily long Förster radius of ∼33 nm.en_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.description.sponsorshipASTAR (Agency for Sci., Tech. and Research, S’pore)en_US
dc.relation.ispartofACS Nanoen_US
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
dc.subjectEngineering::Electrical and electronic engineeringen_US
dc.titleNear-unity efficiency energy transfer from colloidal semiconductor quantum wells of CdSe/CdS nanoplatelets to a monolayer of MoS2en_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.contributor.organizationLuminous! Center of Excellence for Semiconductor Lighting and Displaysen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsSemiconductor Nanocrystalsen_US
dc.subject.keywordsColloidal Nanoplateletsen_US
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