UV and VUV characteristics of (YGd)2O3:Eu phosphor particles prepared by spray pyrolysis from polymeric precursors

E. J. Kim, Yun Chan Kang, H. D. Park, S. K. Ryu

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

Red-emitting (YGd)2O3:Eu phosphor particles, with high luminescence efficiency under vacuum ultraviolet (VUV) and ultraviolet (UV) excitation, were prepared by a large-scale spray pyrolysis process. To control the morphology of phosphor particles under severe preparation conditions, spray solution with polymeric precursors were introduced in spray pyrolysis. The prepared (YGd)2O3:Eu phosphor particles had spherical shape and filled morphology even after post-treatment irrespective of Gd/Y ratio. In the case of solution with polymeric precursors, long polymeric chains formed by esterification reaction in a hot tubular reactor; the droplets turned into viscous gel, which retarded the precipitation of nitrate salts and promoted the volume precipitation of droplets. The brightness of (YGd)2O3:Eu phosphor particles increased with increasing gadolinium content, and the Gd2O3:Eu phosphor had the highest luminescence intensity under UV and VUV excitation. The maximum peak intensity of Gd2O3:Eu phosphor particles under UV and VUV were 118 and 110% of the commercial Y2O3:Eu phosphor particles, respectively.

Original languageEnglish
Pages (from-to)515-524
Number of pages10
JournalMaterials Research Bulletin
Volume38
Issue number3
DOIs
Publication statusPublished - 2003 Feb 20
Externally publishedYes

Fingerprint

Spray pyrolysis
Phosphors
phosphors
pyrolysis
sprayers
Vacuum
vacuum
Luminescence
luminescence
Gadolinium
Esterification
gadolinium
Nitrates
excitation
nitrates
Luminance
brightness
Gels
Salts
reactors

Keywords

  • Ceramics
  • Luminescence
  • Optical materials

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

UV and VUV characteristics of (YGd)2O3:Eu phosphor particles prepared by spray pyrolysis from polymeric precursors. / Kim, E. J.; Kang, Yun Chan; Park, H. D.; Ryu, S. K.

In: Materials Research Bulletin, Vol. 38, No. 3, 20.02.2003, p. 515-524.

Research output: Contribution to journalArticle

@article{4e40580d0ca7413383e659043f1c44f7,
title = "UV and VUV characteristics of (YGd)2O3:Eu phosphor particles prepared by spray pyrolysis from polymeric precursors",
abstract = "Red-emitting (YGd)2O3:Eu phosphor particles, with high luminescence efficiency under vacuum ultraviolet (VUV) and ultraviolet (UV) excitation, were prepared by a large-scale spray pyrolysis process. To control the morphology of phosphor particles under severe preparation conditions, spray solution with polymeric precursors were introduced in spray pyrolysis. The prepared (YGd)2O3:Eu phosphor particles had spherical shape and filled morphology even after post-treatment irrespective of Gd/Y ratio. In the case of solution with polymeric precursors, long polymeric chains formed by esterification reaction in a hot tubular reactor; the droplets turned into viscous gel, which retarded the precipitation of nitrate salts and promoted the volume precipitation of droplets. The brightness of (YGd)2O3:Eu phosphor particles increased with increasing gadolinium content, and the Gd2O3:Eu phosphor had the highest luminescence intensity under UV and VUV excitation. The maximum peak intensity of Gd2O3:Eu phosphor particles under UV and VUV were 118 and 110{\%} of the commercial Y2O3:Eu phosphor particles, respectively.",
keywords = "Ceramics, Luminescence, Optical materials",
author = "Kim, {E. J.} and Kang, {Yun Chan} and Park, {H. D.} and Ryu, {S. K.}",
year = "2003",
month = "2",
day = "20",
doi = "10.1016/S0025-5408(02)01047-4",
language = "English",
volume = "38",
pages = "515--524",
journal = "Materials Research Bulletin",
issn = "0025-5408",
publisher = "Elsevier Limited",
number = "3",

}

TY - JOUR

T1 - UV and VUV characteristics of (YGd)2O3:Eu phosphor particles prepared by spray pyrolysis from polymeric precursors

AU - Kim, E. J.

AU - Kang, Yun Chan

AU - Park, H. D.

AU - Ryu, S. K.

PY - 2003/2/20

Y1 - 2003/2/20

N2 - Red-emitting (YGd)2O3:Eu phosphor particles, with high luminescence efficiency under vacuum ultraviolet (VUV) and ultraviolet (UV) excitation, were prepared by a large-scale spray pyrolysis process. To control the morphology of phosphor particles under severe preparation conditions, spray solution with polymeric precursors were introduced in spray pyrolysis. The prepared (YGd)2O3:Eu phosphor particles had spherical shape and filled morphology even after post-treatment irrespective of Gd/Y ratio. In the case of solution with polymeric precursors, long polymeric chains formed by esterification reaction in a hot tubular reactor; the droplets turned into viscous gel, which retarded the precipitation of nitrate salts and promoted the volume precipitation of droplets. The brightness of (YGd)2O3:Eu phosphor particles increased with increasing gadolinium content, and the Gd2O3:Eu phosphor had the highest luminescence intensity under UV and VUV excitation. The maximum peak intensity of Gd2O3:Eu phosphor particles under UV and VUV were 118 and 110% of the commercial Y2O3:Eu phosphor particles, respectively.

AB - Red-emitting (YGd)2O3:Eu phosphor particles, with high luminescence efficiency under vacuum ultraviolet (VUV) and ultraviolet (UV) excitation, were prepared by a large-scale spray pyrolysis process. To control the morphology of phosphor particles under severe preparation conditions, spray solution with polymeric precursors were introduced in spray pyrolysis. The prepared (YGd)2O3:Eu phosphor particles had spherical shape and filled morphology even after post-treatment irrespective of Gd/Y ratio. In the case of solution with polymeric precursors, long polymeric chains formed by esterification reaction in a hot tubular reactor; the droplets turned into viscous gel, which retarded the precipitation of nitrate salts and promoted the volume precipitation of droplets. The brightness of (YGd)2O3:Eu phosphor particles increased with increasing gadolinium content, and the Gd2O3:Eu phosphor had the highest luminescence intensity under UV and VUV excitation. The maximum peak intensity of Gd2O3:Eu phosphor particles under UV and VUV were 118 and 110% of the commercial Y2O3:Eu phosphor particles, respectively.

KW - Ceramics

KW - Luminescence

KW - Optical materials

UR - http://www.scopus.com/inward/record.url?scp=0037456574&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037456574&partnerID=8YFLogxK

U2 - 10.1016/S0025-5408(02)01047-4

DO - 10.1016/S0025-5408(02)01047-4

M3 - Article

AN - SCOPUS:0037456574

VL - 38

SP - 515

EP - 524

JO - Materials Research Bulletin

JF - Materials Research Bulletin

SN - 0025-5408

IS - 3

ER -