Synthesis and cathodoluminescent properties of Lu3(Al,Ga)5O12: Tb3+ with and without niobium-doped TiO2 coating

Xian-Zhong Zhu; Cheng-Lin Chu; Paul K. Chu

doi:10.1007/s10971-015-3861-7

Synthesis and cathodoluminescent properties of Lu₃(Al,Ga)₅O₁₂: Tb³⁺ with and without niobium-doped TiO₂ coating

Xian-Zhong Zhu^*
, Cheng-Lin Chu
, Paul K. Chu

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

2 Citations (Scopus)

Abstract

Abstract: (Lu_0.95Tb_0.05)₃(Al_0.80Ga_0.20)₅O₁₂ (LuAGG:Tb) phosphor is synthesized by a high-temperature solid-state reaction, and a thin layer of niobium-doped TiO₂ (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 Tb³⁺ under electron excitation. The CL intensity decreases, whereas the resistance to luminance saturation and degradation increases with the coating. Graphical Abstract: [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	355-360
Journal	Journal of Sol-Gel Science and Technology
Volume	77
Issue number	2
DOIs	https://doi.org/10.1007/s10971-015-3861-7
Publication status	Published - 1 Feb 2016

Research Keywords

Cathodoluminescence
Coprecipitation-assisted solvothermal synthesis
Lutetium garnet
TiO2 coating

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10.1007/s10971-015-3861-7

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Cite this

@article{1d51b2cb4e324da5b1a1b1ce9fa30029,

title = "Synthesis and cathodoluminescent properties of Lu3(Al,Ga)5O12: Tb3+ with and without niobium-doped TiO2 coating",

abstract = "Abstract: (Lu0.95Tb0.05)3(Al0.80Ga0.20)5O12 (LuAGG:Tb) phosphor is synthesized by a high-temperature solid-state reaction, and a thin layer of niobium-doped TiO2 (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 Tb3+ under electron excitation. The CL intensity decreases, whereas the resistance to luminance saturation and degradation increases with the coating. Graphical Abstract: [Figure not available: see fulltext.]",

keywords = "Cathodoluminescence, Coprecipitation-assisted solvothermal synthesis, Lutetium garnet, TiO2 coating",

author = "Xian-Zhong Zhu and Cheng-Lin Chu and Chu, \{Paul K.\}",

year = "2016",

month = feb,

day = "1",

doi = "10.1007/s10971-015-3861-7",

language = "English",

volume = "77",

pages = "355--360",

journal = "Journal of Sol-Gel Science and Technology",

issn = "0928-0707",

publisher = "Springer Netherlands",

number = "2",

}

TY - JOUR

T1 - Synthesis and cathodoluminescent properties of Lu3(Al,Ga)5O12

T2 - Tb3+ with and without niobium-doped TiO2 coating

AU - Zhu, Xian-Zhong

AU - Chu, Cheng-Lin

AU - Chu, Paul K.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - Abstract: (Lu0.95Tb0.05)3(Al0.80Ga0.20)5O12 (LuAGG:Tb) phosphor is synthesized by a high-temperature solid-state reaction, and a thin layer of niobium-doped TiO2 (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 Tb3+ under electron excitation. The CL intensity decreases, whereas the resistance to luminance saturation and degradation increases with the coating. Graphical Abstract: [Figure not available: see fulltext.]

AB - Abstract: (Lu0.95Tb0.05)3(Al0.80Ga0.20)5O12 (LuAGG:Tb) phosphor is synthesized by a high-temperature solid-state reaction, and a thin layer of niobium-doped TiO2 (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 Tb3+ under electron excitation. The CL intensity decreases, whereas the resistance to luminance saturation and degradation increases with the coating. Graphical Abstract: [Figure not available: see fulltext.]

KW - Cathodoluminescence

KW - Coprecipitation-assisted solvothermal synthesis

KW - Lutetium garnet

KW - TiO2 coating

UR - https://www.scopus.com/pages/publications/84955745846

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84955745846&origin=recordpage

U2 - 10.1007/s10971-015-3861-7

DO - 10.1007/s10971-015-3861-7

M3 - RGC 21 - Publication in refereed journal

SN - 0928-0707

VL - 77

SP - 355

EP - 360

JO - Journal of Sol-Gel Science and Technology

JF - Journal of Sol-Gel Science and Technology

IS - 2

ER -