Effect of precursor morphology on the structural properties, optical absorption, and luminescence of BaI2:Eu2+,Eu3

BaI 2 :Eu 2+ ,Eu 3+ powders have been prepared by heat-treating BaCO 3 :Eu 3+ precursor powders of various morphologies in an iodinating agent atmosphere and their structural properties, morphology, optical absorption, and luminescence have been studied. The results demonstrate that the powders thus...

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Bibliographic Details
Published inInorganic materials Vol. 53; no. 3; pp. 307 - 312
Main Authors Tret’yak, E. V., Shevchenko, G. P., Solomakha, T. A., Korzhik, M. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 2017
Springer Nature B.V
Subjects
Chemistry
Chemistry and Materials Science
Europium
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Morphology
Optical properties
Precursors
europium luminescence
phosphors
barium iodide
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Summary:BaI 2 :Eu 2+ ,Eu 3+ powders have been prepared by heat-treating BaCO 3 :Eu 3+ precursor powders of various morphologies in an iodinating agent atmosphere and their structural properties, morphology, optical absorption, and luminescence have been studied. The results demonstrate that the powders thus prepared consist of a mixture of crystalline hydrates of various compositions, dominated by BaI 2 ∙ 2Н 2 О (sp. gr. C 2/ c ), and that the Eu 2+ : Eu 3+ ratio in the powders is determined by the morphology of the precursor.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168517030116