LUMINESCENCE OF Eu:Y3Al5O12, Eu:Lu3Al5O12, AND Eu:GdAlO3 NANOCRYSTALS SYNTHESIZED BY THE SOLUTION COMBUSTION METHOD
Abstract
The nanocrystals of rare-earth garnets, Y3Al5O12 and Lu3Al5O12, and perovskite GdAlO3 highly-doped (10-20 at.%) with Eu3+ ions are synthesized by the solution combustion technique and subsequent annealing in air at 800 and 1300 °С. The structure, morphology and composition of obtained materials are studied. Under UV excitation, these materials exhibit intense red luminescence. For Eu:GdAlO3, CIE 1931 color coordinates of the luminescence are (0.632, 0.368), dominant wavelength is 599.6 nm, and color purity is >99%. Judd-Ofelt parameters, luminescence branching ratios and lifetime of the5D0 state of the Eu3+ ions are determined. For 10 at.% Eu:GdAlO3, the luminescence quantum yield reaches 74% and the5D0 lifetime is 1.4 ms. The synthesized materials are promising for red ceramic phosphors.
About the Authors
E. V. Vilejshikova
Center for Optical Materials and Technologies, Belarusian National Technical University
Russian Federation
Russian Federation
A. A. Khort
Belarusian State Technological University
Russian Federation
Russian Federation
K. B. Podbolotov
Belarusian State Technological University
Russian Federation
Russian Federation
P. A. Loiko
ITMO University
Russian Federation
Russian Federation
V. I. Shimanski
Belarusian State University
Russian Federation
Russian Federation
S. N. Shashkov
SOL Instruments
Russian Federation
Russian Federation
K. V. Yumashev
Center for Optical Materials and Technologies, Belarusian National Technical University
Russian Federation
Russian Federation
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Review
For citations:
Vilejshikova E.V., Khort A.A., Podbolotov K.B., Loiko P.A., Shimanski V.I., Shashkov S.N., Yumashev K.V. LUMINESCENCE OF Eu:Y3Al5O12, Eu:Lu3Al5O12, AND Eu:GdAlO3 NANOCRYSTALS SYNTHESIZED BY THE SOLUTION COMBUSTION METHOD. Zhurnal Prikladnoii Spektroskopii. 2017;84(5):810-820. (In Russ.)
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