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Title: Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots
Authors: Yeltik, Aydan
Guzelturk, Burak
Hernandez-Martinez, Pedro Ludwig
Akhavan, Shahab
Demir, Hilmi Volkan
Keywords: DRNTU::Science::Physics
Issue Date: 2013
Source: 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-.
Series/Report no.: Applied physics letters
Abstract: 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.
ISSN: 0003-6951
DOI: 10.1063/1.4858384
Rights: © 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: []. 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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