Enhanced luminescence and degradation resistance in Tb modified Yttrium Borate core-nano silica shell phosphor under UV and VUV excitation

被引：13

作者：

Chawla, Santa ^{[1
]}

Ravishanker ^{[1
]}

Khan, A. F. ^{[1
]}

Yadav, Ashish ^{[1
]}

Chander, H. ^{[1
]}

Shanker, V. ^{[1
]}

机构：

[1] Natl Phys Lab, New Delhi 110012, India

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 16期

关键词：

Solid state reaction and capping; HRTEM; Photoluminescence properties; Time resolved decay; PLASMA DISPLAY PANEL; VACUUM-ULTRAVIOLET; EMISSION; GREEN;

D O I：

10.1016/j.apsusc.2011.03.082

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Composition variation in optimized solid state reaction conditions has been done to achieve intense green emission in YTbxBO3 phosphor under UV and VUV (147nm resonant Xe*, 172nm Xe-2* excimer band) excitation. Inert interface layer created by fabricating a shell of silica nanoparticles over individual phosphor grain protected the phosphor surface from deterioration and oxidation of luminescent ion (Tb3+) thus completely arresting phosphor degradation. At optimum Tb content of 20 mol%, integrated photoluminescence intensity of developed YTbxBO3 phosphor is four times higher than commercial green YBT. With short decay time of 4 ms, YTbxBO3 core-nano silica shell green emitting phosphor has great application potential in PDP panel and phosphor coated Xe lamps. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：7167 / 7171

页数：5

共 26 条

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[Anonymous], JCPDS CARD 16 0277

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