Effect of the composition of the reaction mixture on the preparation of L-cysteine-stabilized CdS nanoparticles and their optical properties |
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| Authors: | E. V. Krupko G. Ya. Grodzyuk Yu. B. Khalavka G. M. Okrepka L. P. Shcherbak |
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| Affiliation: | (1) Yurii Fed’kovych Chernivtsi National University, Vul. Kotsyubyns’kogo, 2, Chernivtsi, 58012, Ukraine;(2) L. V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, Prospekt Nauky, 31, Kyiv, 03028, Ukraine;(3) V. G. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Prospekt Nauky, 45, Kyiv, 03028, Ukraine; |
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| Abstract: | A study was carried out on the dependence of the optical properties such as the maxima in the absorption and luminescence spectra, Stokes shift, and quantum yield on the composition of the three-component Cd2+—L-Cys—S2− reaction system under synthesis conditions at 298 ± 2 K and pH 7. Equations describing the dependence of the position of the maximum in the luminescence and absorption spectra of solutions on their composition were obtained by mathematical planning using the Scheffe simplex-lattice design and treatment of the data. The region of compositions for unstable colloidal solutions was determined. |
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