Effect of Quantum Size on the Luminescent Properties of Quantum Dots Based on Cadmium Halcogenides

A. G. Shmelev; A. V. Leontyev; D. K. Zharkov; V. G. Nikiforov; R. R. Shamilov; I. V. Kryukov; V. S. Lobkov; V. V. Samartsev

doi:10.3103/S1062873818080385

Effect of Quantum Size on the Luminescent Properties of Quantum Dots Based on Cadmium Halcogenides

Authors: Shmelev A.G.¹, Leontyev A.V.¹, Zharkov D.K.¹, Nikiforov V.G.¹, Shamilov R.R.², Kryukov I.V.³, Lobkov V.S.¹, Samartsev V.V.¹
Affiliations:
1. Zavoisky Physical-Technical Institute
2. Kazan National Research Technological University
3. Federal Research Center “Crystallography and Photonics,”
Issue: Vol 82, No 8 (2018)
Pages: 1027-1029
Section: Proceedings of the XII International Scientific School-Seminar “Fundamental Research and Innovation: Nanooptics, Photonics, and Coherent Spectroscopy”
URL: https://journals.rcsi.science/1062-8738/article/view/185991
DOI: https://doi.org/10.3103/S1062873818080385
ID: 185991

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Abstract

The quantum size effects of colloid water-organic media synthesized nanocomposites (CdSe–CdS core–shell) in toluene solution is studied. Femtosecond fluorescence up-conversion spectroscopy is used to establish that quantum dots are characterized by a biexponential decay of luminescence kinetics: the decay times are 1.8 and 26.8 ps for nanoparticles with average sizes of 2 nm and 4.5, and 68 ps for nanoparticles with an average size of 2.9 nm.