Abstract
It has been shown that immediately after the synthesis, the luminescence efficiency of CdSe quantum dots stabilized by n-octadecylphosphonic acid together with one of the auxiliary ligands decreases in the order: oleylamine, hexadecylamine, trioctylphosphine oxide, 1-octadecene, and stearic acid, which is due to combination of the energy of their binding with surface atoms of the nanoparticles and the packing density of the ligands in the shell. In the course of post-synthetic ripening of the quantum dots in a solution, changes in their luminescence quantum yield occur, depending on the solvent polarity and due to rearrangement of the ligands in the shells. The effect of dark recovery of trap luminescence from UV-irradiated quantum dots stabilized by octadecylphosphonic acid and a long-chain amine has been found.
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Original Russian Text © M.G. Spirin, S.B. Brichkin, V.F. Razumov, 2017, published in Khimiya Vysokikh Energii, 2017, Vol. 51, No. 1, pp. 42–49.
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Spirin, M.G., Brichkin, S.B. & Razumov, V.F. Features of the influence of stabilizing ligands on luminescence properties of cadmium selenide colloidal quantum dots. High Energy Chem 51, 38–45 (2017). https://doi.org/10.1134/S001814391701012X
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DOI: https://doi.org/10.1134/S001814391701012X