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Precipitates of selenium and tellurium in II–VI nanocrystal‐doped glass probed by Raman scattering
Author(s) -
Azhniuk Yuriy M.,
Lopushansky Vasyl V.,
Hutych Yuriy I.,
Prymak Mykola V.,
Gomonnai Alexander V.,
Zahn Dietrich R. T.
Publication year - 2011
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201046112
Subject(s) - chalcogenide , nanocrystal , tellurium , raman spectroscopy , selenium , precipitation , materials science , borosilicate glass , raman scattering , thermal treatment , doping , chalcogenide glass , chemical engineering , analytical chemistry (journal) , inorganic chemistry , nanotechnology , chemistry , metallurgy , optics , optoelectronics , environmental chemistry , composite material , physics , engineering , meteorology
Abstract As follows from Raman studies, the formation of cadmium chalcogenide nanocrystals in borosilicate glass under thermal treatment at 625–700 °C can be accompanied by precipitation of elemental Se or Te in the form of molecular Se 2 or Te 2 clusters or larger aggregations. The clusters are in most cases formed when the thermal treatment temperature and/or duration values are beyond the range most suitable for the formation of the II–VI nanocrystals. Larger aggregations are formed at intense thermal treatment, precipitation of tellurium being achieved much easier than that of selenium.