NDLI: Plasmonically Induced Energy Flow in Monodisperse Quantum Dot Solids

Content Provider	Springer Nature Link
Author	Sadeghi, Seyed M. Nejat, A.
Copyright Year	2012
Abstract	We studied the excitation-power-dependent red shift and broadening of the emission spectra of monodisperse CdSe/ZnS quantum dot solids when they are in close proximity of gold metallic nanoparticles. Our results suggest that these features are the signs of plasmonic enhancement of the interdot energy transfer in such solids leading to (a) efficient funneling of excitons to the locations where quantum dots with large CdSe cores are and (b) near complete depletion of excitons in regions where the quantum dots with incomplete shells or/and small core sizes are located. We studied the impacts of the heat generated by the metallic nanoparticles and discussed the effects of excitation-power-dependent photoionization rates. The uneven spatial distribution of excitons in monodisperse quantum dot solids in the presence of metallic nanoparticles suggests that plasmonic fields can drive significant spatial migration of energy in such structures.
Starting Page	425
Ending Page	434
Page Count	10
File Format	PDF
ISSN	15571955
Journal	Plasmonics
Volume Number	8
Issue Number	2
e-ISSN	15571963
Language	English
Publisher	Springer US
Publisher Date	2012-06-30
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metallic nanoparticles Semiconductor Quantum dots Energy transfer Enhancement Plasmonic Forster Quantum dot solids Biotechnology Nanotechnology Biophysics and Biological Physics Biochemistry
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Biochemistry Biophysics Biotechnology

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