Luminescent Properties of Carbon Nanodots Bound to the Surface of Spherical Microresonator

Hybrid structures consisting of emitting carbon nanodots bound to the surface of monodisperse spherical silica particles, which function as microresonators, are synthesized. The carbon nanodots are deposited onto the particle surface through controllable coagulation in three different solvents: ammo...

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Bibliographic Details
Published in:Physics of the solid state 2020-10, Vol.62 (10), p.1898-1904
Main Authors: Eurov, D. A., Stovpiaga, E. Yu, Kurdyukov, D. A., Dukin, A. A., Smirnov, A. N., Golubev, V. G.
Format: Article
Language:English
Subjects:
Ammonia
Analysis
Carbon
Coagulation
Emission
Hybrid structures
Hydrochloric acid
Optical Properties
Photoluminescence
Physics
Physics and Astronomy
Silicon dioxide
Solid State Physics
Spherical waves
Transfer matrices
Whispering gallery modes
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Summary:Hybrid structures consisting of emitting carbon nanodots bound to the surface of monodisperse spherical silica particles, which function as microresonators, are synthesized. The carbon nanodots are deposited onto the particle surface through controllable coagulation in three different solvents: ammonia, hydrochloric acid, and glycerol. In photoluminescence spectra of hybrid structures, throughout the entire range of carbon nanodot emission, which extends from UV to near IR, we observe the presence of intensive narrow bands related to emission of the nanodots in the whispering gallery modes of a spherical microresonator. All the observed bands are identified by comparing the spectral positions of whispering gallery modes calculated using the transfer matrix method for spherical waves to the experimental data.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783420100054