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Effect of medium pH on the optical properties of CdTe nanocrystals at colloidal synthesis and postsynthetic treatment

  • Synthesis and Properties of Inorganic Compounds
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Abstract

Physicochemical properties of low-dimensional structures based on CdTe obtained by colloidal synthesis method were studied. Effect of thioglycolic, hydroxyethylidenediphosphonic, and ethylenediaminetetraacetic acids as well as L-cysteine and thiourea on the processes of formation of CdTe nanocrystals in aqueous solutions was examined. Medium pH was shown to have a considerable effect on the process of their colloidal synthesis. The features of preparation of concentrated colloidal solutions of CdTe nanocrystals stabilized by thioglycolic acid and further sedimentational precipitation of monodisperse fractions from polydisperse solutions were studied. Optical absorption and photoluminescence spectra of the studied materials immediately after synthesis completion and after postsynthetic treatment were obtained and analyzed.

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Authors and Affiliations

  1. Lashkaryov Institute of Semiconductor Physics, pr. Nauki 41, Kiev, 03028, Ukraine

    O. A. Kapush, L. I. Trishchuk, V. N. Tomashik, Z. F. Tomashik, S. I. Budzulyak, V. N. Ermakov & L. A. Demchina

  2. Chernivtsi National University, 2 Kotsjubynskyi Str., Chernivtsi, 58012, Ukraine

    S. D. Boruk

Authors
  1. O. A. Kapush
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  2. L. I. Trishchuk
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  3. V. N. Tomashik
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  4. Z. F. Tomashik
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  5. S. I. Budzulyak
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  6. S. D. Boruk
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  7. V. N. Ermakov
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  8. L. A. Demchina
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Corresponding author

Correspondence to O. A. Kapush.

Additional information

Original Russian Text © O.A. Kapush, L.I. Trishchuk, V.N. Tomashik, Z.F. Tomashik, S.I. Budzulyak, S.D. Boruk, V.N. Ermakov, L.A. Demchina, 2016, published in Zhurnal Neorganicheskoi Khimii, 2016, Vol. 61, No. 5, pp. 581–587.

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Kapush, O.A., Trishchuk, L.I., Tomashik, V.N. et al. Effect of medium pH on the optical properties of CdTe nanocrystals at colloidal synthesis and postsynthetic treatment. Russ. J. Inorg. Chem. 61, 554–559 (2016). https://doi.org/10.1134/S0036023616050089

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  • DOI: https://doi.org/10.1134/S0036023616050089

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