Electron excitation transfer in nanoclusters of colloidal quantum dots InP/ZnS doped with manganese ions

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Abstract

Colloidal indium phosphide quantum dots with a thin shell of zinc sulfide doped with manganese have been synthesized. Nanoclusters were fabricated based on the obtained nanocrystals. The effect of doping of nanocrystals on the process of Förster resonance transfer of electronic excitation and the spectral and luminescent properties of nanoclusters was studied for the first time. It has been shown that the luminescence of such clusters is radically different from the luminescence of undoped clusters and depends on the size of the nanocrystals. It is shown that the composition of particles participating in Förster transport depends on the moment of observation.

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About the authors

D. S. Popkov

Moscow Institute of Physics and Technology

Email: pevtsov.dn@mipt.ru
Russian Federation, Dolgoprudny

D. N. Pevtsov

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS; Moscow Institute of Physics and Technology

Author for correspondence.
Email: pevtsov.dn@mipt.ru
Russian Federation, Chernogolovka; Dolgoprudny

L. M. Nickolenko

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS; Moscow Institute of Physics and Technology

Email: pevtsov.dn@mipt.ru
Russian Federation, Chernogolovka; Dolgoprudny

V. F. Razumov

Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS; Moscow Institute of Physics and Technology

Email: pevtsov.dn@mipt.ru
Russian Federation, Chernogolovka; Dolgoprudny

References

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Supplementary files

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2. Fig. 1. Kinetic scheme of excitation transport in CT nanoclusters InP:Mn/Zn.

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3. Fig. 2. Photoluminescent properties of InP:Mn/Zn CCTS of different sizes.

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4. 3. Absorption (blue) and luminescence (red) spectra at an excitation wavelength of 425 nm CT InP:Mn/ZnS in hexane.

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5. 4. The excitation–luminescence matrices of (a) a colloidal solution of CCT InP:Mn/ZnS and (b) a colloidal solution of nanoclusters obtained by aggregation of a colloidal solution of CCT InP:Mn/ZnS.

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6. 5. Luminescence spectra of the solution (solid) and clusters (dotted) of the InP:Mn/ZnS CT at various excitation wavelengths.

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7. 6. Time-resolved luminescence matrices of (a) solution and (b) Ni:Mn/Zn nanoclusters.

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8. 7. Fluorescence spectra of the solution (solid) and clusters (dotted) of InP:Mn/ZnS CT at an excitation wavelength of 372 nm at different observation times.

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