Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots

Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots

We report enhanced sensitization of silicon through nonradiative energy transfer (NRET) of the excitons in an energy-gradient structure composed of a cascaded bilayer of green- and red-emitting CdTe quantum dots (QDs) on bulk silicon. Here NRET dynamics were systematically investigated comparatively...

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Main Authors: Yeltik, Aydan, Guzelturk, Burak, Hernandez-Martinez, Pedro Ludwig, Akhavan, Shahab, Demir, Hilmi Volkan
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2014
Subjects:
DRNTU::Science::Physics
Online Access:https://hdl.handle.net/10356/101631
http://hdl.handle.net/10220/18742
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1016312020-03-07T14:00:33Z Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots Yeltik, Aydan Guzelturk, Burak Hernandez-Martinez, Pedro Ludwig Akhavan, Shahab Demir, Hilmi Volkan School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences DRNTU::Science::Physics We report enhanced sensitization of silicon through nonradiative energy transfer (NRET) of the excitons in an energy-gradient structure composed of a cascaded bilayer of green- and red-emitting CdTe quantum dots (QDs) on bulk silicon. Here NRET dynamics were systematically investigated comparatively for the cascaded energy-gradient and mono-dispersed QD structures at room temperature. We show experimentally that NRET from the QD layer into silicon is enhanced by 40% in the case of an energy-gradient cascaded structure as compared to the mono-dispersed structures, which is in agreement with the theoretical analysis based on the excited state population-depopulation dynamics of the QDs. Published version 2014-01-29T03:16:31Z 2019-12-06T20:41:50Z 2014-01-29T03:16:31Z 2019-12-06T20:41:50Z 2013 2013 Journal Article Yeltik, A., Guzelturk, B., Hernandez-Martinez, P. L., Akhavan, S., & Demir, H. V. (2013). Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots. Applied physics letters, 103(26), 261103-. 0003-6951 https://hdl.handle.net/10356/101631 http://hdl.handle.net/10220/18742 10.1063/1.4858384 en Applied physics letters © 2013 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: [http://dx.doi.org/10.1063/1.4858384]. 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. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Science::Physics
spellingShingle DRNTU::Science::Physics
Yeltik, Aydan
Guzelturk, Burak
Hernandez-Martinez, Pedro Ludwig
Akhavan, Shahab
Demir, Hilmi Volkan
Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots
description We report enhanced sensitization of silicon through nonradiative energy transfer (NRET) of the excitons in an energy-gradient structure composed of a cascaded bilayer of green- and red-emitting CdTe quantum dots (QDs) on bulk silicon. Here NRET dynamics were systematically investigated comparatively for the cascaded energy-gradient and mono-dispersed QD structures at room temperature. We show experimentally that NRET from the QD layer into silicon is enhanced by 40% in the case of an energy-gradient cascaded structure as compared to the mono-dispersed structures, which is in agreement with the theoretical analysis based on the excited state population-depopulation dynamics of the QDs.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Yeltik, Aydan
Guzelturk, Burak
Hernandez-Martinez, Pedro Ludwig
Akhavan, Shahab
Demir, Hilmi Volkan
format Article
author Yeltik, Aydan
Guzelturk, Burak
Hernandez-Martinez, Pedro Ludwig
Akhavan, Shahab
Demir, Hilmi Volkan
author_sort Yeltik, Aydan
title Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots
title_short Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots
title_full Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots
title_fullStr Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots
title_full_unstemmed Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots
title_sort excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots
publishDate 2014
url https://hdl.handle.net/10356/101631
http://hdl.handle.net/10220/18742
_version_ 1681037599922192384

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