Preparation of stable CaS:Eu2+, Tm3+ phosphor

Chongfeng Guo; Benli Chu; Mingmei Wu; Qiang Su; Zhenli Huang

Preparation of stable CaS:Eu2+, Tm3+ phosphor

Chongfeng Guo, Benli Chu, Mingmei Wu, Qiang Su^*, Zhenli Huang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Different fluxes were used to synthesize long persistence phosphors, calcium sulfides activated by Eu²⁺ and Tm³⁺, by convenient solid-state method. The phosphor using NH₄F as flux has good crystallinity and large particle size, and its stability against water and other atmospheric components is enhanced. Its afterglow is longer and fluorescent intensity is more intense than that of the phosphor using NH₄Cl as flux. Their PL intensities varied with time in moist air were measured, no remarkable change was found for those prepared with NH₄F flux in contrast with NH₄Cl as flux. So using NH₄F as flux is a good method to enhance the stability of alkaline earth sulfide.

Original language	English
Pages (from-to)	501-504
Number of pages	4
Journal	Journal of Rare Earths
Volume	21
Issue number	5
Publication status	Published - 2003

Keywords

CaS:Eu,Tm
Chemical stability
Flux
Optics
Phosphor
Rare earths

Cite this

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title = "Preparation of stable CaS:Eu2+, Tm3+ phosphor",

abstract = "Different fluxes were used to synthesize long persistence phosphors, calcium sulfides activated by Eu2+ and Tm3+, by convenient solid-state method. The phosphor using NH4F as flux has good crystallinity and large particle size, and its stability against water and other atmospheric components is enhanced. Its afterglow is longer and fluorescent intensity is more intense than that of the phosphor using NH4Cl as flux. Their PL intensities varied with time in moist air were measured, no remarkable change was found for those prepared with NH4F flux in contrast with NH4Cl as flux. So using NH4F as flux is a good method to enhance the stability of alkaline earth sulfide.",

keywords = "CaS:Eu,Tm, Chemical stability, Flux, Optics, Phosphor, Rare earths",

author = "Chongfeng Guo and Benli Chu and Mingmei Wu and Qiang Su and Zhenli Huang",

year = "2003",

language = "English",

volume = "21",

pages = "501--504",

journal = "Journal of Rare Earths",

issn = "1002-0721",

publisher = "Elsevier",

number = "5",

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TY - JOUR

T1 - Preparation of stable CaS:Eu2+, Tm3+ phosphor

AU - Guo, Chongfeng

AU - Chu, Benli

AU - Wu, Mingmei

AU - Su, Qiang

AU - Huang, Zhenli

PY - 2003

Y1 - 2003

N2 - Different fluxes were used to synthesize long persistence phosphors, calcium sulfides activated by Eu2+ and Tm3+, by convenient solid-state method. The phosphor using NH4F as flux has good crystallinity and large particle size, and its stability against water and other atmospheric components is enhanced. Its afterglow is longer and fluorescent intensity is more intense than that of the phosphor using NH4Cl as flux. Their PL intensities varied with time in moist air were measured, no remarkable change was found for those prepared with NH4F flux in contrast with NH4Cl as flux. So using NH4F as flux is a good method to enhance the stability of alkaline earth sulfide.

AB - Different fluxes were used to synthesize long persistence phosphors, calcium sulfides activated by Eu2+ and Tm3+, by convenient solid-state method. The phosphor using NH4F as flux has good crystallinity and large particle size, and its stability against water and other atmospheric components is enhanced. Its afterglow is longer and fluorescent intensity is more intense than that of the phosphor using NH4Cl as flux. Their PL intensities varied with time in moist air were measured, no remarkable change was found for those prepared with NH4F flux in contrast with NH4Cl as flux. So using NH4F as flux is a good method to enhance the stability of alkaline earth sulfide.

KW - CaS:Eu,Tm

KW - Chemical stability

KW - Flux

KW - Optics

KW - Phosphor

KW - Rare earths

UR - http://www.scopus.com/inward/record.url?scp=1342318281&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:1342318281

SN - 1002-0721

VL - 21

SP - 501

EP - 504

JO - Journal of Rare Earths

JF - Journal of Rare Earths

IS - 5

ER -

Preparation of stable CaS:Eu2+, Tm3+ phosphor

Abstract

Keywords

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