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Nanocrystal Formation in Glasses Controlled by Rare Earth Ions
Author(s) -
Liu Chao,
Heo Jong
Publication year - 2014
Publication title -
international journal of applied glass science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 34
eISSN - 2041-1294
pISSN - 2041-1286
DOI - 10.1111/ijag.12074
Subject(s) - nanocrystal , chalcogenide , materials science , ion , quantum dot , rare earth , fluoride , chalcogenide glass , high resolution transmission electron microscopy , transmission electron microscopy , electron , analytical chemistry (journal) , inorganic chemistry , nanotechnology , chemistry , optoelectronics , metallurgy , physics , organic chemistry , chromatography , quantum mechanics
Distribution and roles of rare earth ions in fluoride nanocrystals and lead chalcogenide quantum dots formed in glasses are reported. High‐resolution transmission electron microscopic analysis and electron energy loss spectroscopic ( EELS ) analysis showed that oxyfluoride glasses initially form crystals with high Er 3+ content such as PbErF 5 during heating and gradually form crystals with low Er 3+ concentration. Amount of PbErF 5 crystals depended upon the initial concentration of Er 3+ ions in the parent glasses. EELS analysis also showed that Nd 3+ ions were formed inside PbS quantum dots, supporting the proposition of the formation of Nd‐O clusters.