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Title: Ultraefficient förster-type nonradiative energy transfer enabled by the complex dielectric medium with tuned permittivity
Authors: Hernandez-Martinez, Pedro Ludwig
Yucel, Abdulkadir C.
Demir, Hilmi Volkan
Keywords: Science::Physics
Engineering::Electrical and electronic engineering
Issue Date: 2021
Source: Hernandez-Martinez, P. L., Yucel, A. C. & Demir, H. V. (2021). Ultraefficient förster-type nonradiative energy transfer enabled by the complex dielectric medium with tuned permittivity. Journal of Physical Chemistry C, 125(22), 12405-12413.
Project: NRF-NRFI2016-08
152 73 00025
Journal: Journal of Physical Chemistry C
Abstract: Förster-type nonradiative energy transfer (FRET) is one of the primary near-field phenomena and is a useful, fundamental mechanism allowing us to control the excitation energy flow. Using carefully chosen pairs of quantum emitters/absorbers (donors/acceptors), FRET has proved to be essential in a variety of light-generating and -harvesting systems. However, FRET takes place only in a limited spatial range, and its efficiency suffers from an adversely rapidly decreasing profile over the increasing distance between the donor and acceptor. To foster FRET, reaching ultimate levels of efficiency and extending its range, we systematically studied the FRET mechanism by tuning the background medium’s permittivity. The FRET rates of donor-acceptor pairs consisting of a point-like, quasi-0-dimensional quantum dot and quasi-2-dimensional quantum well nanostructures are analytically derived to characterize the change of FRET rates with respect to the medium’s permittivity. The analysis reveals that the FRET rate becomes singular when the permittivity approaches zero and there is a fixed value for the point-like and all other nanostructures, respectively. By setting the medium’s relative permittivity to realistic values near the singular point, which can be realized by a digital metamaterial approach, ultrahigh FRET rates and thereby ultraefficient FRET-based systems are achievable.
ISSN: 1932-7447
DOI: 10.1021/acs.jpcc.1c02685
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: embargo_20220617
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
SPMS Journal Articles

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