Hydrolysis mechanism and method to improve water resistance of long after-glow phosphor

Junying Zhang; Zhongtai Zhang; Zilong Tang; Tianmin Wang

doi:10.4028/www.scientific.net/msf.423-425.147

Hydrolysis mechanism and method to improve water resistance of long after-glow phosphor

Junying Zhang^*
, Zhongtai Zhang
, Zilong Tang
, Tianmin Wang

^*Corresponding author for this work

School of Physics

Tsinghua University
Beihang University

Research output: Contribution to journal › Conference article › peer-review

13 Scopus citations

Abstract

Hydrolysis mechanism of long afterglow phosphor and the method to improve the water resistance are presented using SrAl₂O₄:Dy,Eu phosphor as an example. The phosphor with high brightness and long afterglow is liable to hydrolyze in water to form Al₂O₃ and Sr₃Al₂(OH)₁₂ because of the crystal structure, and thus the luminescent property decreases. A thin silica film is coated on the surface of the phosphor using a sol-gel process. The silica film acts as a barrier between water and phosphor, and thus suppresses the hydrolysis reaction.

Original language	English
Pages (from-to)	147-150
Number of pages	4
Journal	Materials Science Forum
Volume	423-425
DOIs	https://doi.org/10.4028/www.scientific.net/msf.423-425.147
State	Published - 2003
Event	Proceedings of the Seventh International Symposium on Functionally Graded Materials - Beijing, China Duration: 15 Oct 2002 → 18 Oct 2002

Keywords

Coating
Luminescent property
Phosphors
Water resistance

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10.4028/www.scientific.net/msf.423-425.147

Cite this

@article{28119bf8e3134704bb77e0062b6f326e,

title = "Hydrolysis mechanism and method to improve water resistance of long after-glow phosphor",

abstract = "Hydrolysis mechanism of long afterglow phosphor and the method to improve the water resistance are presented using SrAl2O4:Dy,Eu phosphor as an example. The phosphor with high brightness and long afterglow is liable to hydrolyze in water to form Al2O3 and Sr3Al2(OH)12 because of the crystal structure, and thus the luminescent property decreases. A thin silica film is coated on the surface of the phosphor using a sol-gel process. The silica film acts as a barrier between water and phosphor, and thus suppresses the hydrolysis reaction.",

keywords = "Coating, Luminescent property, Phosphors, Water resistance",

author = "Junying Zhang and Zhongtai Zhang and Zilong Tang and Tianmin Wang",

year = "2003",

doi = "10.4028/www.scientific.net/msf.423-425.147",

language = "英语",

volume = "423-425",

pages = "147--150",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications Ltd",

note = "Proceedings of the Seventh International Symposium on Functionally Graded Materials ; Conference date: 15-10-2002 Through 18-10-2002",

}

TY - JOUR

T1 - Hydrolysis mechanism and method to improve water resistance of long after-glow phosphor

AU - Zhang, Junying

AU - Zhang, Zhongtai

AU - Tang, Zilong

AU - Wang, Tianmin

PY - 2003

Y1 - 2003

N2 - Hydrolysis mechanism of long afterglow phosphor and the method to improve the water resistance are presented using SrAl2O4:Dy,Eu phosphor as an example. The phosphor with high brightness and long afterglow is liable to hydrolyze in water to form Al2O3 and Sr3Al2(OH)12 because of the crystal structure, and thus the luminescent property decreases. A thin silica film is coated on the surface of the phosphor using a sol-gel process. The silica film acts as a barrier between water and phosphor, and thus suppresses the hydrolysis reaction.

AB - Hydrolysis mechanism of long afterglow phosphor and the method to improve the water resistance are presented using SrAl2O4:Dy,Eu phosphor as an example. The phosphor with high brightness and long afterglow is liable to hydrolyze in water to form Al2O3 and Sr3Al2(OH)12 because of the crystal structure, and thus the luminescent property decreases. A thin silica film is coated on the surface of the phosphor using a sol-gel process. The silica film acts as a barrier between water and phosphor, and thus suppresses the hydrolysis reaction.

KW - Coating

KW - Luminescent property

KW - Phosphors

KW - Water resistance

UR - https://www.scopus.com/pages/publications/0037793327

U2 - 10.4028/www.scientific.net/msf.423-425.147

DO - 10.4028/www.scientific.net/msf.423-425.147

M3 - 会议文章

AN - SCOPUS:0037793327

SN - 0255-5476

VL - 423-425

SP - 147

EP - 150

JO - Materials Science Forum

JF - Materials Science Forum

T2 - Proceedings of the Seventh International Symposium on Functionally Graded Materials

Y2 - 15 October 2002 through 18 October 2002

ER -

Hydrolysis mechanism and method to improve water resistance of long after-glow phosphor

Abstract

Keywords

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