Abstract
While studying the effect of thermal treatment at 625–700°C on the formation of borosilicate glass-embedded CdSe or CdSe1−x S x nanocrystals, pronounced bands at 323 and 646 cm−1 were observed in the Raman spectra. They are assigned to Se2 clusters on the base of their frequency positions, widths, intensities, and resonance behavior. The precipitation of Se2 molecular clusters in borosilicate glass is shown to occur when the heat treatment temperature and/or duration are beyond the range, most suitable for the formation of CdSe or CdSe-rich CdSe1−x S x nanocrystals.
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Azhniuk, Y.M., Gomonnai, A.V., Hutych, Y.I. et al. Evidence for formation of Se molecular clusters during precipitation of CdSe1−x S x nanoparticles in glass. Appl. Phys. A 95, 473–477 (2009). https://doi.org/10.1007/s00339-008-4918-z
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DOI: https://doi.org/10.1007/s00339-008-4918-z