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Title: Excitonic enhancement of nonradiative energy transfer from a quantum well in the optical near field of energy gradient quantum dots
Authors: Nizamoglu, Sedat
Hernández-Martínez, Pedro Ludwig
Mutlugun, Evren
Karatay, Durmus Ugur
Demir, Hilmi Volkan
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2012
Source: Nizamoglu, S., Hernández-Martínez, P. L., Mutlugun E., Karatay, D. U., & Demir, H. V. (2012). Excitonic enhancement of nonradiative energy transfer from a quantum well in the optical near field of energy gradient quantum dots. Applied Physics Letters, 100(24), 241109-.
Series/Report no.: Applied physics letters
Abstract: We report strong exciton migration with an efficiency of 83.3% from a violet-emitting epitaxial quantum well (QW) to an energy gradient colloidal construct of layered green- and red-emitting nanocrystal quantum dots (NQDs) at room temperature, enabled by the interplay between the exciton population and the depopulation of states in the optical near field. Based on the density matrix formalization of near-field interactions, we theoretically model and demonstrate that the energy gradient significantly boosts the QW-NQDs exciton transfer rate compared to using mono-dispersed NQDs, which is in agreement with the observed experimental results.
DOI: 10.1063/1.4724109
Rights: © 2012 American Institute of Physics. This paper was published in Applied Physics Letters and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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