Energy transfer dynamics from individual semiconductor nanoantennae to dye molecules with implication to light-harvesting nanosystems

Guangcun Shan; Mingjun Hu; Ze Yan; Xin Li; Wei Huang

doi:10.1117/12.2317666

5 March 2018 Energy transfer dynamics from individual semiconductor nanoantennae to dye molecules with implication to light-harvesting nanosystems

Guangcun Shan, Mingjun Hu, Ze Yan, Xin Li, Wei Huang

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Proceedings Volume 10710, Young Scientists Forum 2017; 107102F (2018) https://doi.org/10.1117/12.2317666
Event: Young Scientists Forum 2017, 2017, Shanghai, China

Abstract

Semiconductor nanocrystals can be used as nanoscale optical antennae to photoexcite individual dye molecules in an ensemble via energy transfer mechanism. The theoretical framework developed by Förster and others describes how electronic excitation migrates in the photosynthetic apparatus of plants, algae, and bacteria from light absorbing pigments to reaction centers where light energy is utilized for the eventual conversion into chemical energy. Herein we investigate the effect of the average donor-acceptor spacing on the time-resolved fluorescence intensity and dynamics of single donor-acceptor pairs with the dye acceptor concentration decreasing by using quantum Monte-Carlo simulation of FRET dynamics. Our results validated that the spatial disorder controlling the microscopic energy transfer rates accounts for the scatter in donor fluorescence lifetimes and intensities, which provides a new design guideline for artificial light-harvesting nanosystems.

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Guangcun Shan, Mingjun Hu, Ze Yan, Xin Li, and Wei Huang "Energy transfer dynamics from individual semiconductor nanoantennae to dye molecules with implication to light-harvesting nanosystems", Proc. SPIE 10710, Young Scientists Forum 2017, 107102F (5 March 2018); https://doi.org/10.1117/12.2317666

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KEYWORDS

Energy transfer

Fluorescence resonance energy transfer

Luminescence

Molecules

Quantum efficiency

Molecular energy transfer

Energy efficiency

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