NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2013, 4 (5), P. 648-656
DEPENDENCE OF QUANTUM YIELD OF UP-CONVERSION LUMINESCENCE ON THE COMPOSITION OF FLUORITE-TYPE SOLID SOLUTION NaY1-x-yYbxEryF4
D. S. Yasyrkina – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia
S. V. Kuznetsov – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia
A. V. Ryabova – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia
D. V. Pominova – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia
V. V. Voronov – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia
R.P. Ermakov – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia
P.P. Fedorov – A. M. Prokhorov General Physics Institute, Russian Academy of Sciences, 38 Vavilov Street, Moscow, 119991, Russia; ppfedorov@yandex.ru
A study of the properties of polycrystalline fluorite-type NaY1-x-yYbxEryF4 solid solutions demonstrated that NaY0.87Yb0.10Er0.03F4 and NaY0.885Yb0.1Er0.015F4 samples produced up-conversion luminescence with 3.35% and 3.62% quantum yields, which were higher than quantum yields of the other NaY1-x-yYbxEryF4 samples. NaY1-x-yYbxEryF4 specimens were prepared by co-precipitation from aqueous solutions by drop-wise addition of rare earth nitrate solutions to aqueous sodium fluoride.
Keywords: fluorides, nanopowders, sodium, yttrium, up-conversion luminescence, quantum yield.
PACS 78.20-e
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