Near-unity efficiency energy transfer from colloidal semiconductor quantum wells of CdSe/CdS nanoplatelets to a monolayer of MoS2
A 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 (F...
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sg-ntu-dr.10356-1370482023-02-28T19:50:52Z Near-unity efficiency energy transfer from colloidal semiconductor quantum wells of CdSe/CdS nanoplatelets to a monolayer of MoS2 Taghipour, Nima Hernandez Martinez, Pedro Ludwig Ozden, Ayberk Olutas, Murat Dede, Didem Gungor, Kivanc Erdem, Onur Perkgoz, Nihan Kosku Demir, Hilmi Volkan School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences Luminous! Center of Excellence for Semiconductor Lighting and Displays Engineering::Electrical and electronic engineering Semiconductor Nanocrystals Colloidal Nanoplatelets A 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. NRF (Natl Research Foundation, S’pore) ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version 2020-02-14T08:21:45Z 2020-02-14T08:21:45Z 2018 Journal Article Taghipour, 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.8b04119 1936-0851 https://hdl.handle.net/10356/137048 10.1021/acsnano.8b04119 29965729 2-s2.0-85049648928 8 12 8547 8554 en ACS Nano This 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 https://doi.org/10.1021/acsnano.8b04119 application/pdf |
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Engineering::Electrical and electronic engineering Semiconductor Nanocrystals Colloidal Nanoplatelets Taghipour, Nima Hernandez Martinez, Pedro Ludwig Ozden, Ayberk Olutas, Murat Dede, Didem Gungor, Kivanc Erdem, Onur Perkgoz, Nihan Kosku Demir, Hilmi Volkan Near-unity efficiency energy transfer from colloidal semiconductor quantum wells of CdSe/CdS nanoplatelets to a monolayer of MoS2 |
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A 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. |
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School of Electrical and Electronic Engineering |
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School of Electrical and Electronic Engineering Taghipour, Nima Hernandez Martinez, Pedro Ludwig Ozden, Ayberk Olutas, Murat Dede, Didem Gungor, Kivanc Erdem, Onur Perkgoz, Nihan Kosku Demir, Hilmi Volkan |
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Article |
author |
Taghipour, Nima Hernandez Martinez, Pedro Ludwig Ozden, Ayberk Olutas, Murat Dede, Didem Gungor, Kivanc Erdem, Onur Perkgoz, Nihan Kosku Demir, Hilmi Volkan |
author_sort |
Taghipour, Nima |
title |
Near-unity efficiency energy transfer from colloidal semiconductor quantum wells of CdSe/CdS nanoplatelets to a monolayer of MoS2 |
title_short |
Near-unity efficiency energy transfer from colloidal semiconductor quantum wells of CdSe/CdS nanoplatelets to a monolayer of MoS2 |
title_full |
Near-unity efficiency energy transfer from colloidal semiconductor quantum wells of CdSe/CdS nanoplatelets to a monolayer of MoS2 |
title_fullStr |
Near-unity efficiency energy transfer from colloidal semiconductor quantum wells of CdSe/CdS nanoplatelets to a monolayer of MoS2 |
title_full_unstemmed |
Near-unity efficiency energy transfer from colloidal semiconductor quantum wells of CdSe/CdS nanoplatelets to a monolayer of MoS2 |
title_sort |
near-unity efficiency energy transfer from colloidal semiconductor quantum wells of cdse/cds nanoplatelets to a monolayer of mos2 |
publishDate |
2020 |
url |
https://hdl.handle.net/10356/137048 |
_version_ |
1759856805330026496 |