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Energy transfer dynamics from individual semiconductor nanoantennae to dye molecules with implication to light-harvesting nanosystems
Author(s): Guangcun Shan; Mingjun Hu; Ze Yan; Xin Li; Wei Huang
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Paper 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.

Paper Details

Date Published: 5 March 2018
PDF: 6 pages
Proc. SPIE 10710, Young Scientists Forum 2017, 107102F (5 March 2018); doi: 10.1117/12.2317666
Show Author Affiliations
Guangcun Shan, BeiHang Univ. (China)
City Univ. of Hong Kong (Hong Kong, China)
Mingjun Hu, City Univ. of Hong Kong (Hong Kong, China)
Beihang Univ. (China)
Ze Yan, Beihang Univ. (China)
Xin Li, Beihang Univ. (China)
Wei Huang, Northwestern Polytechnical Univ. (China)


Published in SPIE Proceedings Vol. 10710:
Young Scientists Forum 2017
Songlin Zhuang; Junhao Chu; Jian-Wei Pan, Editor(s)

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