Synthesis and cathodoluminescent properties of Lu3(Al,Ga)5O12:Tb3+ with and without niobium-doped TiO2 coating
(Lu 0.95 Tb 0.05 ) 3 (Al 0.80 Ga 0.20 ) 5 O 12 (LuAGG:Tb) phosphor is synthesized by a high-temperature solid-state reaction, and a thin layer of niobium-doped TiO 2 (NTO) is deposited on the phosphor particles by coprecipitation-assisted solvothermal synthesis. The crystal structure, micromorpholog...
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Published in | Journal of sol-gel science and technology Vol. 77; no. 2; pp. 355 - 360 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer US
01.02.2016
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | (Lu
0.95
Tb
0.05
)
3
(Al
0.80
Ga
0.20
)
5
O
12
(LuAGG:Tb) phosphor is synthesized by a high-temperature solid-state reaction, and a thin layer of niobium-doped TiO
2
(NTO) is deposited on the phosphor particles by coprecipitation-assisted solvothermal synthesis. The crystal structure, micromorphology, chemical bonding, and cathodoluminescent (CL) properties of both the uncoated and NTO-coated phosphors are determined. The phosphor powders possess a single phase, and the average diameter of the particles is about 3 μm. NTO nanoparticles with the anatase crystal structure are connected to the phosphor particles electrostatically. Both types of phosphors exhibit the characteristic emission spectrum of Tb
3+
under electron excitation. The CL intensity decreases, whereas the resistance to luminance saturation and degradation increases with the coating.
Graphical Abstract |
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ISSN: | 0928-0707 1573-4846 |
DOI: | 10.1007/s10971-015-3861-7 |