Abstract
Fluorine-phosphate glasses activated with cadmium sulfide quantum dots (QDs) have been investigated. QDs of different sizes (2.8, 3.0, and 3.8 nm in diameter) have been formed as a result of heat treatment near the glass-formation temperature. This variation in the QD size leads to a red shift of the fundamental absorption edge (459 nm) and luminescence band (859 nm). A dependence of the excited state lifetime on the recording wavelength in the range of 450–700 nm is revealed. It is shown that an increase in the QD size from 2.8 to 3.8 nm makes the excited state lifetime longer. The quantum yield increases from 16.3 to 33.7% with an increase in the QD size.
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Original Russian Text © Zh.O. Lipatova, E.V. Kolobkova, V.A. Aseev, 2015, published in Optika i Spektroskopiya, 2015, Vol. 119, No. 2, pp. 239–243.
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Lipatova, Z.O., Kolobkova, E.V. & Aseev, V.A. Kinetics and luminescence of cadmium sulfide quantum dots in fluorine-phosphate glasses. Opt. Spectrosc. 119, 229–233 (2015). https://doi.org/10.1134/S0030400X15080159
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DOI: https://doi.org/10.1134/S0030400X15080159